Aquatic mammals making my day! Part 1

1 river otter P1154270© Maria de Bruyn res

While I love all wildlife, many of my blogs feature birds because my chances of seeing them are greater than seeing other animals. Mammals are a favorite of mine, however, and aquatic mammals are always a pleasure to see since spotting them is not always easy. That is certainly the case for the cute river otters (Lontra canadensis) like the one above.

4 otter PC251157© Maria de Bruyn

These river and pond residents are among the most elusive mammalian water residents for me.  At one pond that I visit regularly, they appear to have adopted an abandoned beaver lodge as their home. There, it is usually movement caught out of the corner of my eye that alerts me to their presence.

2 otter PC251094 © Maria de Bruyn res

Sometimes a view of the rump and tail is all I get as they barely lift their heads out of the water. It’s interesting to know, however, that their tail comprises up to 40% of their body length, helps speed them up to 8 mph (13 Km/h) in the water, and helps them dive up to 36 feet (11 m).

3 otter PA309843© Maria de Bruyn res

5 otter PA309953© Maria de Bruyn resThe otters don’t always appreciate spectators. Sometimes, they emerge from the water briefly and give me a view shrouded by vegetation before they dive back down. That’s frustrating when you’re trying to get a nice photo, but at least I’ve never scared them enough for them to sound their alarm scream, which apparently can be heard up to 1.5 m/2.4 km away!

8 beaver lodge IMG_0294© Maria de Bruyn resThe other day at another pond, I was lucky enough to see a pair close to shore. They were foraging and when they finally disappeared, they appeared to have entered a beaver lodge located next to a walking path (seen here). The beavers may have abandoned this lodge as they have at least two others in this park.

6 river otter P1154288 © Maria de Bruyn res

Researchers have not yet agreed on when otters enter their breeding season; it could be winter, late spring or summertime according to different studies. In any case, it seemed to me like this might be a mated pair.

7 river otter P1154340© Maria de Bruyn res

As they swam around, the couple would occasionally come together.

9 river otter P1154298 © Maria de Bruyn res

10 river otter P1154319 © Maria de Bruyn res

They didn’t stop to frolic, however, even though otters are known for their playfulness. They did blow some bubbles and I’ve learned that they can close their nostrils during dives to keep water out of their noses. Seeing them was a real treat! And their presence should indicate good fortune for the Sandy Creek Park since river otters are considered an indicator species that signal good water quality.

11 river otter P1154272 © Maria de Bruyn

In September, I wrote about seeing muskrats (Ondatra zibethicus) and North American beavers at a third reserve. Since then, I’ve had the good fortune to see both species there several times. The muskrats have especially graced me with their presence.

12 muskrat PC173212© Maria de Bruyn res

14 Brumley pond IMG_0308© Maria de Bruyn resThat’s lucky because last year our county had its 12th driest December month on record over the past 128 years. This was quite evident at the pond, which appeared to have shrunk by at least 30-40% during the autumn and early winter drought (my estimate). I’ve been surprised to see these animals still living there.

Because muskrats don’t tolerate dry heat well, they’ve been designated an indicator species for the effects of long-term climactic drying. Recent research has shown that their numbers and response to this phenomenon should be taken into account in scientific and environmental policy-making.

13 muskrat PC312704 © Maria de Bruyn res

To deal with dry heat, these mammals regulate blood flow to their feet and tail through a mechanism called regional heterothermia. This enables them to keep these appendages cooler than their body’s core. Another interesting anatomical feature is the muskrats’ specialized nostrils, which they can use to trap and recycle air after removing more oxygen before exhalation.

16 muskrat PC048728 © Maria de Bruyn res

At this particular pond, I’ve discovered that if I wait patiently for at least 20 minutes or so without other people walking by, it’s likely that one of the resident muskrats will surface to go for a swim and/or to forage for weedy food. (They can stay submerged for up to 15-17 minutes, so patience is warranted.) It’s often the appearance of small bubbles that alerts me to their presence and location.

18 muskrat PC048731© Maria de Bruyn res

Sometimes they emerge with their tails held high as if waving a signal flag – “I’m here!”

17 muskrat PC048698© Maria de Bruyn res

The muskrats dive down and come up with a mouth full of vegetation which they chew while swimming or sitting near the shore. They can also eat underwater since they’re able to chew with their mouth closed because they can close their lips behind their incisors.

20 muskrat PC048695© Maria de Bruyn res

Muskrats prefer to live in areas with at least 4-6 ft (1.2-1.8 m) of water where they build tunnels that lead from the pond or marsh bottom into burrows dug into banks. I now know approximately where their burrow is located as I’ve seen them emerge and submerge in a particular spot.

19 muskrat PC048688© Maria de Bruyn res

Our area just had a snowfall of 2.3 inches (5.8 cm) which will be melting in the coming days. Hopefully, the next time I visit this pond it will be fuller, and the muskrat residents will have a more spacious swimming and eating area. And then they will have good reason to wave their tails in celebration!  (Apologies for the less than stellar photos as I’ve had to use a short lens lately. Hope to have my long lens back soon. The photos in part 2 of this aquatic mammal series are better!)

21 muskrat PC312678© Maria de Bruyn res (2)

Emerging again in 2022 – part 2

1 Red-shouldered hawk P1132421© Maria de Bruyn resWhen facing unpleasant challenges, it’s helpful to have an interest to help put them mentally aside while you find enjoyment doing something else. Observing and connecting with wildlife and plant life does that for me. For at least a while, I can think, “I don’t give a shit,” and instead focus on what’s going on immediately around me, like the red-shouldered hawk (Buteo lineatus) above actually giving a shit. 😊

Observing nature also has the added advantage of providing a way to keep learning and being able to appreciate wonders around me that I might otherwise never notice. A number of people have also told me that they enjoy my sharing some of those “discoveries.”

1A white-throated sparrow PC141120© Maria de Bruyn res

White-throated sparrow (Zonotrichia albicollis)

One thing I discovered this year was that I shouldn’t expect pine siskins to come down here to Orange County, NC, every year in winter. I’ve had them visiting during this season many years but so far not one has appeared in my yard. So I’ll share a photo of one from last year; a lovely bird with a scientific name that appeals to me: Spinus pinus.

2 pine siskin P1162664 © Maria de Bruyn res

3 downy woodpecker P8207522© Maria de Bruyn resIt’s my good fortune to live in a home with sizeable front and backyards where I can entice birds to spend time. Nest boxes border the yards and nesting gourds hang on the front porch, so that attracts pairs who raise young ones here in the spring. They also use these nesting sites to spend the night during cold autumn and winter nights. Downy woodpeckers (Dryobates pubescens) seem especially fond of one nest box next to the driveway.

There are varied types of feeders hanging on poles, offering sunflower and other seeds, mixed fruit and nuts, dried mealworms and home-made suet. This arrangement also attracts my avian friends, like the common grackle (Quiscalus quiscula) with its iridescent plumage.

4 common grackle P1175003 © Maria de Bruyn res

5 Carolina wren P1132867 © Maria de Bruyn resSince converting much of my front yard lawn into flower gardens (and I’m working on that in the back, although there I’ve planted more flowering and berry-bearing trees), the insect population has increased. That has helped the pollination of my flowers and provided the resident birds with meals, like one of the 6 or so Carolina wrens (Thryothorus ludovicianus) who occupy specific niches. One pair hangs out near a water-filled tub; another pair hangs out near a brush pile out back and the third pair hops in and out of a brush pile in the front yard.

The wrens change up their diet a bit in winter since being purely insectivorous is difficult then. For example, one of my yard-banded wrens enjoys a bit of suet from time to time. He also likes mealworms, as do the titmice (Baeolophus bicolor).

6 Carolina wren IMG_8993© Maria de Bruyn res

7 Tufted titmouse snow IMG_9006 © Maria de Bruyn sgd

8 Tufted titmouse P1132809© Maria de Bruyn res

9 American goldfinch P1143301 © Maria de Bruyn res

Occasionally, an American goldfinch pair (Spinus tristis) will visit but I’ve been seeing them more often on walks. They like seeds a lot and have eaten many of the grass seeds in my yard already. They search the mosses for tidbits, too.

10 cedar waxwing PC271628© Maria de Bruyn resThe cedar waxwings (Bombycilla cedrorum) are picky eaters. The American robins in my yard ate a lot of the juniper berries they prefer and there weren’t many other berries around (as was the case at the local arboretum). At my house, they’ve mostly been using the small ponds to drink and bathe.

The most numerous species at my yard is the Northern cardinal (Cardinalis cardinalis). At times, I have up to 18-20 of them flying to the tray feeders for seeds. The pokeweed berries are long gone now.

11 Northern cardinal PA074424 © Maria de Bruyn res

There are two pairs of Eastern bluebirds (Sialia sialis) in the yard; at first, they didn’t like having to share space but now they all come to the mealworm feeder at the same time.

12 Eastern bluebird PB212516 © Maria de Bruyn res

13 yellow-rumped warbler PA017988© Maria de BruynIn past years, the visiting yellow-rumped warblers (Setophaga coronata) have lived peacefully with one another. This year, however, I have two birds who seem to be quite incensed when they spy each other. If one is at a feeder, the other zooms in to chase it off and often they flutter upward in a tangle with wings spread. So far, I’ve always been a couple seconds too late to capture the mid-air tussle – it is one of my goals for yard birding this year.

15 yellow-rumped warbler P9093954© Maria de Bruyn

I do enjoy their visits as I find them quite beautiful birds. And they spend a lot of time at the feeders, even when it is raining. Some people here call them myrtle warblers, but I prefer the term yellow-rumped as it is quite accurately descriptive. I loathe the slang term “butter butt” that lots of people here use. Since these warblers are present in many of the nature reserves where I walk, I unfortunately end up hearing the term from time to time. Not sure why it irritates me so much.

16 yellow-rumped warbler PA017970 © Maria de Bruyn

17 yellow-rumped warbler PA018009© Maria de Bruyn

18 pine warbler IMG_9129© Maria de Bruyn resThe pine warblers (Setophaga pinus) in my yard are quite tolerant and polite.

They will share a feeder happily and sometimes also just wait their turn until the feeding area is less crowded.

Less colorful but also a pleasure to see are the female house finches (Haemorhous mexicanus). They seem to come to the feeders less often than their male counterparts.

20 house finch PC101023© Maria de Bruyn res

The Carolina chickadees (Poecile carolinensis) are a delight to see, even if they seem to be in almost constant motion.

21 Carolina chickadee PC230399© Maria de Bruyn res

23 Carolina chickadee PC088891© Maria de Bruyn res (2)

The other bird who also rarely sits still is the lovely little ruby-crowned kinglet (Corthylio calendula). A few years back, I had one that came several winters in a row and who had apparently come to trust me as he would fly over when I brought out fresh suet and even sit on the feeder while I was holding it. He may have attained his natural lifespan (4-6 years) and perhaps it is one of his offspring who now comes.

24 Ruby-crowned kinglet PA158187 © Maria de Bruyn sgd

27 golden-crowned kinglet PC090095 © Maria de BruynI hadn’t had golden-crowned kinglets (Regulus satrapa) in my yard much before this year; now I have at least one living here but s/he never comes to the feeders. Because this bird stays very high and I haven’t had access to my long camera lens for some time, it’s been difficult to get photos at home. I’ve had somewhat more success on walks.

25 golden-crowned kinglet PC090158 © Maria de Bruyn res

26 golden-crowned kinglet PC090099 © Maria de Bruyn res

28 golden-crowned kinglet PC061957© Maria de Bruyn res2 (2)

29 red-shouldered hawk P1071059 © Maria de Bruyn res

Some of my more spectacular yard birds have been the neighborhood red-shouldered hawks. When they fly in, the other birds don’t seem bothered.

These hawks have targeted the amphibians and reptiles (successfully) near the small ponds; they also look for small mammals. While I’ve seen them catch frogs, I haven’t seen them catch birds or mammals.

The young ones are not as reddish as the adults.

30 red-shouldered hawk PB180215© Maria de Bruyn res (2)

I also enjoy seeing these gorgeous raptors on my visits to nature reserves. Some have what seems to me like a sweet expression (like this one below).

31 red-shouldered hawk PC204514 © Maria de Bruyn res

Finally, there is one bird that does make the other birds flee the feeders to seek shelter in bushes, shrubs, woodpiles, etc. That is the neighborhood Cooper’s hawk (Accipiter cooperii). A sharp-shinned hawk visits occasionally, but it is the Cooper’s who comes by regularly. S/he is not shy; about a week ago, the bird flew onto the front porch where it had chased a female cardinal into the living room window. The cardinal flapped on a chair as the hawk peered at her. I banged on the window and ran outside to rescue her. I know the hawk has to eat as well, but I didn’t want to see the dismemberment of this poor bird. I put her in a box in a corner of the porch and she fortunately recovered.

32 Cooper's hawk P1081087 © Maria de Bruyn res

Feathers in the yard and under feeders have shown that the Cooper’s has had successful hunts, so it is doing well.

33 Cooper's hawk P1081094 © Maria de Bruyn res

Next up – my water-loving mammalian friends. Have a nice weekend!

Emerging again in 2022 – part 1

1 leaf P9146097© Maria de Bruyn res

Not too long ago, a friend asked me whether I’d stopped writing my blog, a question that truly startled me. Over the past months, much of my time has been spent addressing new as well as ongoing problems and challenges, but I also kept taking nature walks and photographing wildlife and natural phenomena.

I stored photos and notes in folders for potential blog topics, so in my mind I was still engaged in the writing process, but then I realized that my last blog was published in mid-October 2021, 3 months ago! So, I’ve now made a conscious effort to set aside some time to again share some photos and observations of what I’ve been seeing the past half-year or so.

I’ll re-start my blogging with photos in the plant (part 1) and bird (part 2) families but without a specific focus. They are simply visuals that appealed to me, like the suspended leaf above. I hope you enjoy seeing them, too.

2 rose PC018346 © Maria de Bruyn res

At the end of autumn/start of winter 2021, I still had some lovely flowers blooming in my garden. A rose that hadn’t had any buds all spring and summer suddenly sent out a lovely bloom!

The Rose of Sharon had bloomed all season.

3 Rose of Sharon P8070836© Maria de Bruyn res

4 Rose of Sharon P8070832© Maria de Bruyn res

The hot lips sage and lantana emerged in mid-summer and then lasted well into winter.

5a hot lips sage P9146178 © Maria de Bruyn res

5 lantana P8252416 Maria de Bruyn res

In our area, people often take autumn trips to the Appalachian Mountains as the fall colors tend to be really wonderful then. This year, many people remarked on how gorgeous the trees were in our area and some people decided to just admire the beautiful trees nearby.

8 autumn trees IMG_1972 (Maria de Bruyn) res

6 Jordan Lake PB063613 © Maria de Bruyn res

7 Jordan Lake PB063637 © Maria de Bruyn res

A tree in the Cane Creek Reservoir lake looked lovely against the fall background and the far shore of the lake made for a beautiful scene, too.

10 Cane Creek IMG_0014 © Maria de Bruyn res

9 Cane Creek IMG_0006 © Maria de Bruyn res

My maple tree delighted me with its bright colors but the leaves didn’t last too long.

11 maple PB169564 © Maria de Bruyn res

When the vegetation took on winter browns and beige hues, it still was beautiful to see.

12 leaves IMG_1908 © Maria de Bruyn res

13 seedsPC173288 © Maria de Bruyn res

And there were pockets of green left here and there, making for nice abstracts

14 stems P8028400 © Maria de Bruyn res

or settings for insects, like spiders.

15 spider P8251982 Maria de Bruyn res

16 web P8081563 © Maria de Bruyn

And the rains left behind droplets that shimmered and delighted before dissolving with late-year sunshine.

17 water droplet PA063700© Maria de Bruyn

May your coming year will just keep getting better and better as it goes along! (Next up, some birds that have been delightful the past weeks.)

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A surprise at the pond

1 Bynum IMG_0631© Maria de Bruyn res

A combination of abundant vegetation and some type of water — a creek, river, wetland, pond or lake — is one of my favorite types of natural area to visit for wildlife watching and photography. Water attracts wildlife and increases the chance of seeing something unexpected. 

This was the case recently at a local nature reserve. A few days earlier, I’d seen many goldfinches and warblers at one of the ponds, but this day it was very quiet. I descended a small slope to stand on a mudflat and was suddenly surprised by a large splash to my left.

2 Brumley pond IMG_0643 © Maria de Bruyn res

When I looked, I saw a largish head forging across the water in front of me. My first thought was that it was a muskrat (Ondatra zibethicus) as there is no beaver lodge in this enclosed pond.

3 American beaver P8132481© Maria de Bruyn res

Muskrats and beavers look very similar, but beavers (Castor canadensis) tend to be much larger. This was a hefty individual who seemed fairly relaxed as s/he swam along.

4 American beaver P8132423© Maria de Bruyn res

As I watched the mammal swim back and forth for a while, I tentatively concluded that it was a beaver, based on my previous sightings of this rodent species. Still, I wasn’t quite sure and kept hoping that the animal would raise its tail so that I would have a decisive clue to its identity.

Beavers have large flat tails, while muskrats have long, thin tails. Finally, as s/he swam by again, I got a glimpse of the tail for a couple seconds and it was large and flat! Unfortunately, I didn’t get a photo of that (see a previous blog for some photos showing the beaver’s tail).

 

5 American beaver P8132456© Maria de Bruyn res

As I watched and took photos, a couple walked by with their dog and stopped to watch as well. I moved down the path and heard the gentleman exclaim, “Oh, it’s a beaver!” I turned and he explained that he had thought the swimmer was a muskrat, but he had just seen the tail, too.

6 American beaver IMG_0256© Maria de Bruyn res

The aquatic mammal climbed up onto a log for a bit to groom and relax and, as the couple remarked, almost seemed to be posing for me. The beaver kept its back to me most of the time though. 

 

14 American beaver P8132476 © Maria de Bruyn res

I began to walk back down the path in hopes of getting a head-on view if the beaver decided to swim again. S/he did indeed slip back into the water to resume swimming back and forth. And then to my delight, a small head popped up going the other direction!

7 American beaver and muskrat P8132482 © Maria de Bruyn res

For some reason, I just assumed that it was a baby beaver, swimming around under the watchful eye of a parent. The newly arrived rodent seemed to be very intent on eating and dove down into the pond to bring up some tasty vegetation.8 Muskrat P8132671 © Maria de Bruyn res

It then swam over to the mudflat where I had been, and I ventured back there.

9 Muskrat P8132493© Maria de Bruyn res

Moving slowly and maintaining a good distance from the dining animal, I was able to get some good views as it enjoyed its meal.

10 Muskrat P8132618© Maria de Bruyn res

11 Muskrat P8132497 © Maria de Bruyn res

12 Muskrat P8132506 © Maria de Bruyn resWhile the beaver’s fur remained sleek on its head and back after being submerged a while, the little one’s fur stuck together in clumps all over its head and body. To me it looked a bit like a punk teenager — an analogy that undoubtedly came to mind because I was thinking of it as a baby or adolescent beaver.

This was one of the cutest wildlife spottings I had had in recent weeks, and I was thoroughly enjoying it. But I began doubting if this animal was indeed a beaver. I never saw its tail but at one point, I could see some orange teeth that reminded me of beaver incisors.

13 Muskrat teeth P8132647© Maria de Bruyn res

Of course, the diner didn’t care and just kept diving for more veggies to eat. The large beaver appeared to have left in the meantime.

15 Muskrat P8132510© Maria de Bruyn res

It was when I was reviewing identity characteristics of beavers vs muskrats while writing this blog that I ultimately came to a final conclusion about whom I had been watching. This was based on several websites that provided some good ID clues:

Beavers tend to weigh about 35-70 or even up to 100 lbs (15-30 or even 45 kg), Muskrats generally weigh only about 2-5 lbs (0.9-2.3 kg).

Beavers’ ears protrude from their heads as they swim around (first photo below), while muskrats’ ears lie flat (second photo below). Beavers also have larger noses.

16 American beaver P8132453© Maria de Bruyn res

17 Muskrat P8132673 © Maria de Bruyn res

Muskrats dive down to get vegetation from pond bottoms to eat, which my second visitor was very busy doing indeed. Beavers strip bark and leaves from trees and in my experience (having watched beavers eat close by a couple years ago), they can be quite noisy chewers.

18 Muskrat P8132574© Maria de Bruyn res

I’d enjoyed the idea of having seen a parent-and-child beaver duo but, in hindsight, I concluded that I’d been watching a beaver and a muskrat sharing pond space.

19 American beaver P8132475 © Maria de Bruyn res

This was also a very cool event since neither one had been shy. A lack of other human passersby (only the one couple strolled by in the space of almost an hour) may have made them feel comfortable. It was certainly a treat for me!

20 Muskrat P8132665© Maria de Bruyn res

Next up: fateful days for frogs….

Springtime with awesome, beautiful and awe-inspiring insects

This spring of 2021 has offered some delightful chances to see interesting insect species, some of which I’ve noticed before and some that were new or gave me my first opportunity to observe them up close. While not many people aside from entomologists pay much attention to the “creepy crawlies,” they are certainly well worth watching in my view. Including insects in my nature observations greatly enhances my experience of appreciating the natural world.

male giant ichneumon wasp P5068000© Maria de Bruyn res (4)

ichneumon wasp P5067996© Maria de Bruyn res (2)

female giant ichneumon wasp P5068007 © Maria de Bruyn res (2)The month of May brought me two especially awe-inspiring events. The first was seeing long-tailed giant ichneumon wasps (Megarhyssa macrurus) preparing for reproduction on a nature trail in Chatham County. It was easy to distinguish the females (right) from the males (above) because they had very long ovipositors (a tubular organ through which a female insect lays stored eggs). In the species I saw, the ovipositor can be 4 inches long!’

female giant ichneumon wasp P5068028© Maria de Bruyn res (2)

There were several male and three female wasps flying about. None of them showed the slightest interest in the large human looming overhead. Even if they had, I needn’t have worried since these wasps don’t sting people. The females were busy pressing their antennae against a disintegrating hardwood log’s bark, aiming to detect vibrations inside.

ichneumon wasp P5068180© Maria de Bruyn res (2)

The mothers-to-be were “listening” for the best spots to lay their eggs by identifying where the larvae of the pigeon tremex horntail wasp (Tremex columba) were buried. Why you ask? The mother ichneumon paralyzes a horntail larva before laying an egg next to it. When her own offspring emerge from the eggs, they will eat those unfortunate horntail larvae while they prepare to overwinter until they emerge as full-grown ichneumon wasps in the spring.

ichneumon wasp P5068058 © Maria de Bruyn res (2)

 

The giant ichneumon’s ovipositor has three components. In the middle is the ovipositor proper, a filament with two interlocking parts that slide against one another; it is tipped with a cutting edge that can drill through wood. Some researchers have data indicating that the cutting edge may contain some ionized zinc or manganese.

ichneumon wasp P5068164© Maria de Bruyn res (2)

Two other thin filaments called valvulae sheath the central structure and their function is to protect the egg-laying organ. During egg-laying, they arc away from the ovipositor.

ichneumon wasp P5068171© Maria de Bruyn res (2)

While I watched one female wasp in particular, she sometimes had part of her ovipositor coiled up in a transparent expandable pouch at the end of her abdomen.

ichneumon wasp IMG_2003© Maria de Bruyn res (2) ichneumon wasp IMG_2002 © Maria de Bruyn res (2)

She would push out the ovipositor and appeared to smooth it out with her legs. The literature I read about the wasps did not explain this movement, but I thought she might be pushing eggs down the tube. Watch the video to see what you think! 

When she finished this smoothing movement and had found the right spots for her offspring, the protective lining filaments separated from the ovipositor itself and she inserted it into the log. It was a fascinating process to witness.

 

female giant ichneumon wasp P5068170 © Maria de Bruyn res (2)

female giant ichneumon wasp P5068109 (© Maria de Bruyn res (2)

Although ichneumon wasps are parasitic, various species are beneficial insects since their larvae feed on insects that harm food crops such as boll weevils, codling moths and asparagus beetles. The adults usually only live about 27 days and may only drink during that time. Their adult goal is to find a mate and then reproduce.

ichneumon wasp P5068014 © Maria de Bruyn res (2)

Another way in which the ichneumon wasps have contributed to human society is by serving as an example for the medical community. The STING Project at the Imperial College in London is investigating options for Minimally Invasive Surgery (MIS) to diagnose and treat various medical pathologies. The research team is now developing a flexible steerable probe that was inspired by the ichneumon wasp’s ovipositor!

cecropia moth IMG_0019 © Maria de Bruyn (2)My other exciting insect event involved a moth. Last fall, a cecropia moth (Hyalophora cecropia) positioned its cocoon on the door jamb of the women’s restroom at Cane Creek Reservoir. The reservoir’s manager feared that it would be damaged there and asked if I would be willing to care for it over the winter. I took the cocoon home and kept it safe during the fall, winter and much of this spring.

Cecropia moth larvae (caterpillars) are often found on maple, cherry and birch trees. Why this one chose a building as an overwintering site is a bit of a mystery. Since the pupa was going to be dormant all winter, I placed it upright in a large plastic container with a grate over the top and kept it on my screened-in porch.

cecropia moth IMG_0020© Maria de Bruyn (2)Periodically, I would check on it and it seemed to be ok. This was important as these moths are “univoltine” — they only have one generation of offspring per year. Out in nature, the caterpillars may fall victim to parasitic wasps and flies that lay their eggs on them. So it was fortunate that we were able to “rescue” this cocoon.

One evening at the end of May, I stopped working on my porch to go inside to watch the news. When I came back after about 20 minutes, I spotted a brilliant large moth on the screen. My youngest cat spotted it at the same time, so I shooed her inside. The cocoon scarcely had a hole in it; I really wish I’d seen how the huge moth got out.

cecropia moth IMG_0006© Maria de Bruyn (2) res

cecropia moth IMG_0003© Maria de Bruyn 2 res

The cecropia moth is North America’s largest moth with a wingspan up to 7 inches. The males and females look similar but the males like this one have larger, more feathery antennae.

cecropia moth IMG_0012© Maria de Bruyn (2) res

Female moths emit pheromones that the males can detect from up to a mile away. After mating, the female lays up to 100 eggs. Both sexes die after about two weeks as they lack functioning mouths and digestive systems and don’t eat.

cecropia moth IMG_0014 © Maria de Bruyn (2) res

 

The moth’s short adult lifespan must have made this guy anxious to get underway. Or seeing my cat and I hastened his development. One website reported that it takes the moth a few hours to dry before they can open their wings and fly.

cecropia moth IMG_0011© Maria de Bruyn (2) res

 

However, very soon (perhaps 10 minutes) after I removed him from my porch and took him outside (never touching him with my hands), he began vibrating his wings. In less than a minute, he launched himself upwards and flew towards the top of the nearby tall pine trees, setting off on his quest for a mate.

cecropia moth IMG_0016© Maria de Bruyn (2a) res

I suppose it is possible that the moth had emerged earlier and had crawled away to hide but that seemed unlikely. In any event, he looked like he could fly just fine, and I sincerely hope that he found a mate and that they were able to collaborate in ensuring a new generation of this stunningly beautiful species! And I was grateful for having agreed to overwinter the cocoon as it enabled me to contribute to the propagation of this wonderful moth. In any event, I was enthralled to see what a gorgeous creature he was. These moths are generally nocturnal so seeing him was a treat!

cecropia moth IMG_0017 © Maria de Bruyn (2) res

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