Helping monarch butterflies thrive

If you follow news about nature, you may have come across warnings that the monarch butterfly (Danaus plexippus) has been in rather dire straits for many years now.

 

These lovely orange and black butterflies live from 6 to 8 weeks when they are adults engaged in reproduction. Those who live in the Eastern USA participate in a multi-generational migration process between Canada and central Mexico. The last generation to emerge in late summer is able to delay its sexual maturity to undertake the last leg of the migratory journey (called reproductive diapause) and may live up to 8 months. Individual butterflies may travel as far as 1200-3000 miles to get to their warmer over-wintering grounds.

 

Since the 1980s, the Eastern US monarch population has declined by about 80%, mainly because the only food source for their caterpillars has been disappearing. Milkweeds used to grow abundantly in agricultural areas and along roadsides and ditches, but people have been eradicating the plants from fields and using herbicides and mowing to remove them along roads.

Climate change has also affected the butterflies’ breeding and migratory patterns so that reproduction has been reduced.

One way to help out the monarchs is to plant native (not exotic!) milkweeds in your own yard and any other natural spaces to which you have access. I’ve been doing it around my home and as a volunteer for the Mason Farm Biological Reserve. This year, I was lucky enough to be a beneficiary of a milkweed give-away organized by some local high-school students, so I had two types of the plants in my yard.

 

The ones that I had originally planted were common milkweed (Asclepias syriaca). These plants have large globular clusters of flowers that range in color from pinkish to purple. They do not have blooms their first year but that doesn’t stop the caterpillars from eating their leaves.

 

Butterfly weed (also known as butterfly milkweed; Asclepias tuberosa) is a bit more delicate and “exuberant” in appearance, with small clusters of orange, reddish and yellow flowers. These were the plants that I was gifted by the students and I was happy to see them grow quickly to exhibit their beautiful blooms.

According to Wikipedia, the butterfly milkweed is not a preferred plant for the monarch but this year the butterflies seemed much more attracted to it than to the common milkweed. After a few visits from some butterflies, I began seeing caterpillars and at one point counted 17 crawling up and down the various plants.

They were especially prevalent on the butterfly weed in my front yard and were munching the plants to bare stems very quickly.

 

       

To make sure they had enough food, I transferred some of them to the common milkweeds in my back yard – these were larger plants with much broader leaves and I thought this would ensure their healthy development. Frass (poop) was being left on the remaining leaves and the ground surrounding the plants.

 

It was rewarding to see three caterpillars make it to the chrysalis stage; the other caterpillars crawled away before I could see where they went, and I didn’t find them suspended from any plants. The first one had attached itself to a bare sapling and, unfortunately, the next day it had disappeared, leaving only the silken thread by which it had been suspended.

The caterpillars store milkweed glycosides in their bodies, making them toxic to many other animals. They still have many predators, however, including wasps, spiders, other insects, lizards, toads and mice. I resolved to save at least one chrysalid if I could.

I got to see the second chrysalis being formed (see the video, which is a little shaky at times). When the caterpillar is ready to undergo the pupation stage, it attaches itself to a plant stem by making a silk pad as an anchor (called a cremaster). Then it inserts the hooks at the end of its abdomen into the pad and hangs down. When the caterpillar forms a J shape, this signals the change to a chrysalis will soon be underway.

Starting from the head, the outer skin is shed, rolling up as the new covering develops. The shed skin may remain at the silk pad or fall off.

 

Slowly the stripes of the caterpillar disappear, and the chrysalis takes on a shiny even green hue, with some golden accent spots.

 

I kept that chrysalis, as well as a third one I saw the next morning, in my house and waited for them to darken. This signals the butterfly is almost through developing inside.

One morning I found the newly emerged monarch from the second chrysalis drying its wings. I took it outside so that it could fly free and then begin its trip to Mexico. (I also took the third one outside when it darkened but the twig holding it disappeared.)

 

You, too, could contribute to their propagation by planting some milkweed if you have an area for this. Autumn is the best time to plant seeds, but you can try it in the spring as well. Common milkweed typically doesn’t flower during its first year, but butterfly weed will give you flowers in its first season; the latter plants may be slow to emerge at first.

Both of these milkweed varieties are perennials so be sure to remember where you planted them. Common milkweed may spread out with time, while butterfly weed remains where you put it.

 

Other flowering plants will attract the adult monarchs, too, for nectaring, such as asters and lantana.

 

And then sit back next year and wait for the monarchs to arrive, happy in the knowledge that you have contributed to maintaining a favorable environment for their survival.

More ideas on how you can participate in the drive to save this iconic butterfly are detailed on a U.S. Fish & Wildlife Service website: https://www.fws.gov/savethemonarch/

 

Birds and blooms at Sandy Creek Park – more of the “good ones”

moon I77A9993© Maria de Bruyn res

Birds are a favorite photographic subject of mine, even though catching them in late spring and summer is challenging when the lush foliage offers them many places to hide. Their songs and calls and warbles tell me that they are there, but often I need to wait quite a while until I finally catch a flutter of movement out of the corner of my eye to locate them.

 

white-eyed vireo I77A0007©Maria de Bruyn

One early morning, when the moon was still in the sky, I was fortunate enough to see a lot of fluttering in trees near the park’s parking lot – and I discovered an immature white-eyed vireo (Vireo griseus) with a parent who looked as if she or he was really practicing forbearance.

white-eyed vireo I77A0010©Maria de Bruyn      white-eyed vireo I77A0006©Maria de Bruyn

Carolina wren I77A0188©Maria de Bruyn res

Nearby, a Carolina wren (Thryothorus ludovicianus) was singing loudly; these little avians have an outsized voice so that you can hardly miss them even when they are hidden behind leaves.

A handsome male goldfinch (Spinus tristis) was in a field, while a female was visiting the coneflowers (Echinacea), of which there were various species in the cultivated butterfly garden.

 

 

American goldfinch I77A0382©Maria de Bruyn res American goldfinch I77A0177©Maria de Bruyn res

coneflower I77A7325© Maria de Bruyn res      coneflower I77A6365© Maria de Bruyn res   coneflower I77A6250© Maria de Bruyn res

Eastern bluebird I77A6188© Maria de Bruyn res

 

Other birds were busy finding insect meals, like the male, female and immature Eastern bluebirds (Sialia sialis).

 

 

 

 

 

Eastern bluebird I77A6022© Maria de Bruyn res    Eastern bluebird I77A5558© Maria de Bruyn res

Common grackle I77A6377© Maria de Bruyn res

 

The common grackle (Quiscalus quiscula) scored a meal, while the pine warbler (Setophaga pinus) and blue-gray gnatcatcher (Polioptila caerulea) were busy in the trees searching for caterpillars and insects.

Other birds (and mammals, I think) had been getting crayfish from the ponds but I guess there were so many that they only ate the tastiest parts.

Pine warbler I77A5605© Maria de Bruyn res   Pine warbler I77A5598© Maria de Bruyn

 

blue-gray gnatcatcher I77A0302©Maria de Bruyn res     crayfish IMG_4926©Maria de Bruyn res

The American robins (Turdus migratorius) were looking for earthworms on the ground, and the song sparrows (Melospiza melodia) alternated between the ground and shrubs in their search for food.

American robin IMG_0550© Maria de Bruyn res     song sparrow I77A6195© Maria de Bruyn

The male red-winged blackbirds (Agelaius phoeniceus) were calling and flying from shrub to shrub, showing off their handsome black plumage with a red highlight.

red-winged blackbird I77A6090© Maria de Bruyn res  red-winged blackbird I77A6126© Maria de Bruyn res

Over at a nearby pond, the Northern rough-winged swallows (Stelgidopteryx serripennis) were swooping over the water and then sharing space on a snag; meanwhile, a mother wood duck (Aix sponsa) led her brood along the shoreline.

rough-winged swallow I77A0234© Maria de Bruyn res    wood duck I77A7225© Maria de Bruyn

In a tree beside another pond, the immature great blue herons (Ardea herodias) were still at their nest at the start of June; later in the month, they were no longer hanging out there.

great blue heron IMG_0430© Maria de Bruyn res   great blue heron IMG_0402© Maria de Bruyn res

milkweed I77A0079©Maria de Bruyn res

 

Botanists can have a great time at Sandy Creek, too. The milkweed plants in the butterfly garden attract both butterflies and bees.

Carolina horsenettles (Solanum carolinense) are common but pretty little plants, while the orange jewelweed (Impatiens capensis) enjoys a good reputation as having stem juice that relieves the pain caused by poison ivy for many people.

Carolina horsenettle I77A5581© Maria de Bruyn res      orange jewelweed I77A0511© Maria de Bruyn res

The fairywand (Chamaelirium luteum) grows profusely on the edges of Sandy Creek ponds and the swamp rose (Rosa palustris) sprouts near them as well.

fairywand I77A7293© Maria de Bruyn res      swamp rose Rosa palustris I77A5621© Maria de Bruyn res

Japanese honeysuckle I77A5711© Maria de Bruyn res

 

Japanese honeysuckle (Lonicera japonica), an invasive plant, attracts pollinators but so does the more vibrant and native coral honeysuckle (Lonicera sempervirens L.).

 

 

 

coral honeysuckle I77A0159© Maria de Bruyn res      coral honeysuckle I77A0127© Maria de Bruyn 2 res

In the fields, you can see lovely brown-eyed Susans (Rudbeckia) and coreopsis.

Brown-eyed Susan IMG_0504© Maria de Bruyn res  brown-eyed Susan IMG_0497© Maria de Bruyn res

 

coreopsis flower IMG_0494© Maria de Bruyn res   coreopsis flower IMG_0486© Maria de Bruyn res

Stoke's aster I77A6353© Maria de Bruyn resThe cultivated garden in the park gets plenty of color from the Stoke’s asters (Stokesia laevis) and red bee balm (Monarda didyma), which is a real magnet for hummingbirds. I recently bought a couple for my home garden and was rewarded with seeing the hummers visit them within 2 days.

 

 

red bee balm I77A7307© Maria de Bruyn res    red bee balm I77A6390© Maria de Bruyn res

What makes my walks so interesting is discovering new species. A native grass (Bromus) was lovely; helpful facebook group members gave me suggestions for possible species but we couldn’t narrow it down. The group also helped me identify a plant that I hadn’t seen before, a Germander (Teucrium canadense).

grass Bromus IMG_4811© Maria de Bruyn res   Germander Teucrium canadense I77A0544© Maria de Bruyn res

I managed to find an ID myself for a common flower that seems to grow all over the place – the Asiatic dayflower (Commelina communis). It is considered an invasive plant and is on the watch list for North Carolina, but I have to say that I find it quite attractive. Each flower blooms for only one day and to me they look like little faces and make me smile. And so I continue learning as each new walk invariably ends up teaching me something new. Enjoy your day!

Asiatic dayflower Commelina communis I77A0667© Maria de Bruyn res    Asiatic dayflower I77A0677© Maria de Bruyn res

See anything good?

Sandy Creek path IMG_4981© Maria de Bruyn resThat’s a common question I get when I am out on one of my nature walks. Since I carry a camera with a large zoom lens and often a smaller camera, too, it’s obvious to passersby that I’m out observing nature. And I realize that when they ask the question, what they really want to know is whether I saw anything unusual or spectacular.

A recent walk at Sandy Creek Park in Durham, NC, was a case in point. I told one couple who posed the question that my most memorable sighting so far had been a male ebony jewelwing damselfly (Calopteryx maculata) – the iridescence of its body and wings in the sunlight was wonderful. They smiled a bit uncertainly and the lady of the pair admitted that she didn’t know anything about damselflies as they walked on.

ebony jewelwing I77A0417© Maria de Bruyn res   ebony jewelwing I77A0469© Maria de Bruyn res

Fragile Forktail damselfly I77A0648© Maria de Bruyn resAn hour or so later, another couple asked if I had “seen any good ones?” I repeated my delight in seeing the male damselfly, adding that the female is not as striking with her brown color and white spots. “Yes,” said the man, “that is often the case with other species. In our species, though, it’s the females who shine.” That may be the case some of the time, but my day was made by seeing a female damselfly that was a member of a new species for me – the fragile forktail (Ischnura posita).

 

My experience is that I find some beauty in almost all the wildlife I see (ticks and chiggers are an exception). So I want to share a few of those “good things” I saw at Sandy Creek Park last month in a two-part blog “tour”. In this first part, I’ll continue on with the insects.

Identifying dragonflies is not easy since the females and males can look quite different. The great blue skimmer (Libellula vibrans) provides an example – the male lives up to his name with a blue hue and large size, but the female shows off her beauty with a brown and yellow abdomen.

great blue skimmer dragonfly I77A0715© Maria de Bruyn res    great blue skimmer dragonfly I77A0741© Maria de Bruyn res

The Eastern pondhawk (Erythemis simplicicollis) has distinctively different appearances as a male and female. The adult male is a blue individual, sometimes with a bit of greenish tint; the female – and the immature males! – is brilliant with different shades of green. I remember being excited when I first spotted a female as their green color is so striking.

Eastern pondhawk I77A0721© Maria de Bruyn res  Eastern pondhawk I77A0749© Maria de Bruyn res

blue dasher I77A0172©Maria de Bruyn resThe blue dasher dragonfly (Pachydiplax longipennis) has some stripes, as do some of the bumble bees. The brown-belted bumble bee (Bombus griseocollis) lives up to its name with a brown stripe, while this American bumble bee (Bombus pensylvanicus) feeding on a trumpet vine (Campsis radicans) has white bands. Like honey bees, the latter bee has pollen baskets (corbicula) on its hind legs in which it stores pollen. I enjoyed watching this individual – s/he would dip down into the flower, back up a bit, and then plunge forward again, almost always keeping the pollen basket above the tip of the flower.

Brown-belted bumble bee I77A0218©Maria de Bruyn res   American bumble bee I77A0763© Maria de Bruyn2 res

Bumble bee I77A6297© Maria de Bruyn res

 

The pollen gatherers were numerous during both visits and willing to share the sources of their bounty – here you see a bumble bee (Bombus), syrphid fly (Toxomerus marginatus) and sweat bee (Halictus) feeding peacefully together on a coneflower (Echinacea).

 

 

Eastern carpenter bee IMG_0768© Maria de Bruyn res

 

 

The milkweed plants were attracting many species of pollinators; here an Eastern carpenter bee (Xylocopa virginica) was enjoying a meal.

 

 

common buckeye I77A0237© Maria de Bruyn res

 

While there were many, many bees the days of my visits, there were fewer butterflies but the common buckeye (Junonia coenia) was stunning!

 

 

The little wood satyr (Megisto cymela) and dun skipper (Euphyes vestris, to the lower right on the milkweed) were not as colorful, and some people might even call them dull, but they are still nice to see and the Eusarca moth (Eusarca confusaria) was also an evenly colored beauty. I had grown up thinking moths usually fly at night, attracted by lights so it still draws my attention when I see them in the daytime.

Little wood satyr I77A0584© Maria de Bruyn res         Eastern carpenter bee IMG_0804© Maria de Bruyn 2 res

Confused Eusarca moth Eusarca confusaria I77A5701© Maria de Bruyn

Even a somewhat tattered American lady (Vanessa virginiensis) offered a pretty view.

American lady I77A6238© Maria de Bruyn res

The broad-headed sharpshooter (Oncometopia orbona), a leaf hopper, and the spotted pink lady beetle (Coleomegilla maculata) are tiny but such colorful insects that close perusal of the vegetation helps you spot them (and presumably makes it easier for birds to see them, too?).

broad-headed sharpshooter Oncometopia orbona I77A0592© Maria de Bruyn      Spotted pink lady beetle I77A0081©Maria de Bruyn bg

Emerald ash borer trap I77A0719© Maria de Bruyn res

 

One beetle that we don’t really want to see is the emerald ash borer (Agrilus planipennis), an invasive species that came to the USA from Asia. The larvae of these beetles kill ash trees and the park administrators have hung a trap box for them to determine whether this species has reached the park.

 

 

Spotting mammals is not always easy at the park but one day fellow birder Jim was kind enough to alert me to an opossum (Didelphis virginiana) in a tree when we met on a walking path. He told me approximately where it was and I spotted that one and another in a nearby tree; I thought it might be a mother and grown offspring but that was a guess and I certainly couldn’t confirm it. As these are nocturnal animals, it was pretty cool for me to see two in broad daylight. The only marsupial found in the United States and Canada is a beneficial animal for us humans (and other wildlife) as they could eat up to 4000 ticks in a week! 

opossum IMG_0605© Maria de Bruyn res     opossum I77A5788© Maria de Bruyn res

One of the pair demonstrated that they can open their jaws widely – watching him/her slowly stretch that mouth offered me a surprise; I would think it couldn’t go any further and the animal continued to show that s/he could really please a dentist who would like lots of space to investigate those teeth.

opossum I77A5897© Maria de Bruyn res

Eastern cottontail rabbitI77A5578© Maria de Bruyn res

 

 

The Eastern cottontail rabbit (Sylvilagus floridanus) was not so lucky, carrying a fat tick in its ear. Too bad the opossums couldn’t come by and groom him/her and remove that pesky arachnid!

 

The park is not only attractive for the entomologists. Reptile enthusiasts can spot turtles fairly easily, especially in the spring when they are looking for places to lay their eggs. A large painted turtle was crossing a field looking for a spot, while an Eastern mud turtle (Kinosternon subrubrum) was trundling down a paved path one morning, not far from a pond which often has many painted turtles and red-eared sliders (Trachemys scripta elegans), like this one – who must have been a bit bothered by a bird feather caught in its shell.

Eastern mud turtle IMG_0741© Maria de Bruyn res    Red-eared slider I77A5941© Maria de Bruyn2

Which bird could it have been? I’m thinking a swallow – see part 2 of the tour for a view of the species and more of the wonderful biodiversity that can be seen in the park.