Category Archives: Biological diversity

Two “otterly” fun months — otters at three ponds

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The past two months brought me some really rewarding wildlife sightings. While birding, I learned new things about a couple avian species (see The Wild Side). But my main wildlife entertainment came from discovering and watching otters at three ponds. (A reminder: if you click on a photo, it enlarges; to get back to the blog, back space.)

My first sighting came on 29 November 2024 at a pond near a large housing development. I’d been looking to see if the beavers were at their lodge when I suddenly spotted some movement low in the water. To my amazement, four beautiful otters came swimming by, heading in the direction of the beaver lodge (photo above). They kept themselves fairly hidden behind vegetation and then went to sit and play on the lodge behind some brush and small trees growing on the beavers’ home.

My next sighting was very unexpected, at a pond that had lost a lot of wildlife because the vineyard owner who purchased the surrounding farmland had cut down almost all the trees, shrubs and vegetation for miles around.

Because some migrating waterfowl still occasionally show up at the formerly lively pond, I visited there hoping to spot at least a few ducks. I was surprised to see a round head and sinuous body emerging from the water.

To my delight, I got to watch not just one but two otters swimming about and successfully nabbing fishy meals. One seemed to be less wary of people watching; the other would only stay in sight for a short time and then head to the pond bank underneath a lone standing tree as long as people were around.

I’m not sure what kind of fish they were catching, but they seemed to be enjoying good meals.

My next sighting was at the Sandy Creek Park in a nearby town. An otter suddenly popped up and began swimming low in the water among the vegetation. Then it swam across the pond to a beaver lodge and there caught some animal for a meal.

The mammal was quite far away and my camera lens wasn’t strong enough to get good views. In the end, I figured that it had caught a crayfish or something similar.

My best views of otters came when I returned to the pond where I had first spotted the quartet. Despite repeated visits, I didn’t see four of them anymore but only a trio.

It might be that the fourth one was a male who went off on his own. When winter comes and food is less accessible, otter groups tend to disperse so that each family member has access to food and food stores are not depleted.

River otters tend to roam over a specific territory, staying in one spot for one to four weeks. In the summertime, they may travel within an area of 20 square miles, but in winter they expand their territory upwards to about 60 square miles to maximize their success in finding food.

Fish are a dietary staple, especially in winter, but they also eat crayfish, crabs, turtles, amphibians, reptiles, insects, and even occasionally birds or small mammals. Besides the otter at Sandy Creek Park, I only saw them eating fish, but it was amazing how many fish they could catch and eat in quick succession.

In fact, their ability to almost always come up with a fish after going under water or dunking their head into the pond must account for the fact that the resident great blue heron tended to stick close to them. The heron would watch intently where they were fishing and when they moved to another area of the pond, the large bird would follow.

At one point, the heron stayed so close to a fishing otter that I wondered if the large bird was going to attempt to snatch a fish away, but that didn’t happen!

The hungry avian finally did catch fish, too.

In my next blog, I’ll show you some of the otters’ successful winter fishing forays, let you know how they manage to keep swimming in icy waters and outside temperatures of 15-30°F, and let you see how the otters were playing.

 

 

An hour at a local pond

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There is a pond in the county where I live that used to be a real hot spot for birds and other wildlife. The dairy farm fields around it had lots of native vegetation, which was very welcoming to avian wildlife.

A couple years ago, the farmers retired, and the property was purchased by a vineyard owner to expand his holdings. He cut down most of the vegetation around the pond and along the road bordering the fields. He has turned most of the fields into vineyards, keeping only small portions untouched where birds can still find some refuge.

I used to see a yellow-billed cuckoo return from migration to a small patch of trees there every spring. This now is a thing of the past. However, some pond-edge vegetation had been regenerated, and a little bit was planted, so some birds are hanging in there. They still make for some interesting birding. Here is what I saw on a recent visit.

The largest birds that keep returning to the pond are the great blue herons. Sometimes there is one; other times there are two or three. Occasionally a green heron flies in or over but none stopped by on this occasion.

The heron often has good days fishing there. I often see him/her snag at least one fish and often more than one.

The heron stalks along the pond and frequently flies across to the other side for a change of venue. Perhaps the fish manage to hide well once they realize s/he is stalking them.

It’s wonderful to see the heron’s wings spread as the bird alights and then begins stalking again.

Eastern bluebirds had taken advantage of an electrical installation next to the pond (which also serves as a resource for the local fire department as needed). They not only used it as a perch for bug seeking but also built a nest inside it. I wondered what the new owner would do.

 

   

To my great surprise, his problem was solved by the local electricity company. They removed the birds’ original nest and put it into a temporary nest box!

    

Mom and Dad bluebird were guarding the nest space, but it looked like they were still getting used to the new digs.

While watching the bluebirds, I suddenly heard a commotion in front of me, but I couldn’t see what was happening behind the bushes at the pond’s edge (I’m short!). However, I could tell that a bird was in distress. I wondered if one of the huge snapping turtles had caught a duckling. I walked further along and saw one of the two resident female wood ducks (above) swimming away from the area.

No ducklings followed and I feared the worst. One mother had five ducklings (above) while the one swimming away had lost one a few weeks before. Now I wondered if she had lost others, too. Luckily, I later saw her return to the area and shepherd four ducklings across the water to the other side.

 

In the small bit of meadow immediately adjacent to the pond, red-winged blackbirds are now nesting. One pair has a nest close to the road and they are warning visitors away with constant flights along the pond’s edge, while the male calls repeatedly.

 

The female was taking breaks from warning-off flights to enjoy an occasional meal, at this time consisting of one of the remaining periodical cicadas that emerged recently.

She wasn’t the only one seeking these insect delicacies. Two Northern mockingbirds were also intently examining the area under a tree for them. One finally had success in snagging a cicada. (For more about the cicadas, see my previous two blogs!)

  

The male red-winged blackbird was very busy keeping “intruders” as far as away as possible from their nest. He warned off the great blue heron, who was actually pretty far away. (He is flying away from the heron on the left side of the photo.)

He also went after a red-tailed hawk, who appeared soaring overhead.

Common grackles, often present at this pond, will also chase away these hawks. There weren’t any around to join in the foray this time, but the photos below taken at another pond show how they go after the red-tails.

I looked at a small patch of chicory across the road to see if any bobolinks, grosbeaks or meadowlarks were around. I love this plant and planted some seeds in my own yard, hoping to attract more pollinators and birds. So far, they have not sprouted.

 

Below you see a young blue grosbeak and a pair of Eastern meadowlarks who were in the patchy field spots another time.

 

Usually, several types of swallows frequent the pond, including purple martins, tree swallows, barn swallows and Northern rough-winged swallows. I only saw a couple of the latter this day and only got poor flight photos as my camera began acting up, refusing to focus.

Staring hard across the pond, I did manage to spot three killdeer, four least sandpipers and a couple other sandpipers that I couldn’t immediately identify. I later learned that they were semipalmated sandpipers, which I hadn’t seen there yet. (If you click on the photo, you see it larger; then go back to the blog.)

That hour at the pond didn’t turn out to be a super one for capturing stellar photos, but it was definitely a great one for relaxing, observing the action and appreciating nature again!

They’re baaaack!!! — and so am I! Part 2

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But the Great Southern Brood of periodical cicadas is getting ready to leave…!

Having heralded their appearance in my previous blog, I’d like to share a bit here about what these insects are now facing as they expend their remaining energy on ensuring the survival of their species.

Some of our community members (both animal and human) are as appreciative as I am that these creatures are here. In listserv postings, a few people have commented, for example:

  • Sounds great.
  • I guess I am rare in thinking they are cool. It feels other worldly….
  • And it’s all about SEX. Just think about all those teenage hot-rodders gunning their engines to attract attention. They’re all saying “Come and get me baby. I’m HOT.” After years underground, you would be, too.

It’s almost impossible to miss the cicada phenomenon where I live unless you have hearing or vision problems or can’t get outside. Their calls for gathering and hooking up can reach a level of 100 decibels and this continues for hours on end.

The sounds can vary a bit because the Great Southern Brood comprises several species of periodical cicadas with somewhat different songs.

However, it seems that quite a few people don’t pay attention to the broadcast or print news. Despite the considerable coverage given to the cicadas’ appearance, inquiries about the ongoing noise continue in listservs, irritating some community members:

  • Please stop asking about the sound cicadas make! Please! And if someone answers, why do 50 people feel the need to respond? I feel that so much of the posts are so religious. Does anyone else feel this way?… I didn’t mean religious! I meant repetitive!
  • Cicadas are a plague sent from God signaling the End Of Time. The purple glow in the sky last night [Northern Lights] was the Rapture, and, since we’re still here … well, there’s that…
  • If you don’t like it, stop looking at the posts.

The numbers of cicadas we’re seeing really is amazing. They need an enormous population because that is how they ensure some will live long enough to reproduce. These insects have no physical or chemical defense mechanisms at all. Many will succumb to diseases and predators.

One particularly strange phenomenon is a fungus that attacks the cicadas. Massospora cicadina has evolved to target periodical cicadas. The cicada nymphs can become infected when they dig their way out of the soil.

The fungus is a chalky white substance that destroys their reproductive organs but does not kill the insect. As the infection progresses, the male cicada continues to move around and tries to mate. Eventually, the back part of its abdomen drops off and we can see the white fungal growth. But the cicada doesn’t die from this and continues trying to find a mate!

Image by Katja Schulz, CC BY 4.0. Reproduced with permission from  <https://creativecommons.org/licenses/by/4.0&gt;, via Wikimedia Commons

The cicadas also have no means to fend off predators and they are a highly desired food source for other creatures. Those who eat them include snakes, spiders, beetles, wasps, opossums, squirrels, raccoons, frogs, dogs and even people.

This unfortunate individual died early on during the cicada emergence and the local ants found it on my driveway.

These cicadas are especially vulnerable to avian predation. I’ve now seen different species of birds chowing down on them, including grackles (below) and robins.

The red-bellied woodpeckers seem to have a particular fondness for them. A young woodpecker was hoping that its parents would provide them as a meal, but the parents were eating the insects themselves.

A Northern cardinal stopped by for a meal.

The resident male Eastern bluebird in my yard was supervising his three rapidly maturing fledglings in their efforts to catch and consume the large insects.

His mate was already tending another nest of 5 eggs, so he was occasionally feeding her as well, including cicada tidbits.

Given the enormous numbers of cicadas that have arrived, some are managing to stay alive and healthy so they can mate. The females may lay as many as 600 eggs in nests dug into plant stems.

After 6-10 weeks, the eggs hatch and the nymphs crawl down to the earth to go underground for their 13-year “hibernation” period.  There they will eat sap from tree roots, undergo their molting and live out their lives with the people walking above or near them having no idea that they are there.

My chances of seeing the members of Brood XIX again are likely not so great, but perhaps some of you readers who live in the northeastern USA may get to see them emerge again then. If so, I hope you will find them fascinating, too!

 

 

They’re baaaack!!! — and so am I! Part 1

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The Great Southern Brood is here!

It’s been over a half year since I’ve written a blog (although I’ve penned a monthly newspaper column and a few articles in the meantime). Numerous concerns including ill health kept leading to blog postponements. Fortunately, I’ve been able to continue my nature observations, a boon to keeping things on a somewhat even keel. And lately it’s been my privilege to see some interesting creatures and to witness behaviors I’d not seen before in person.

The immediate inspiration for resuming my blogs has been the emergence of the Great Southern Brood XIX (Magicicada spp.) of periodical cicadas — an animal species which humans only get to see every 13 years! This is the largest cicada brood in eastern North America, which is the only geographical area where they occur. I’ll share some of my current sightings and interesting tidbits about them and hope you enjoy this in a two-part blog.

Periodical cicada eggs, laid above ground, hatch into nymphs which then go underground to pass through five juvenile stages before emerging 13 years later by the hundreds of thousands (even millions!). After emergence, they only live a few weeks, purely for the purpose of finding a mate and reproducing their species.

One of the first noticeable things to alert humans to the coming “deluge” of cicadas, seen above, is the appearance of numerous holes in the earth as they tunnel out to the fresh air. This happens when the ground reaches a temperature of about 64°F/17.8°C.

What emerges from the holes are brownish-tan nymphs, who crawl onto plant stems and tree trunks. Underground, they will have undergone four moulting periods as they grew during the past 13 years.

The vegetation becomes laden with these still immature insects almost everywhere you look.

   

The adults emerge from their last exoskeleton through the back, which splits open. If you look carefully below, you can see one emerging on the right.

The newly emerged cicadas then undergo a quick maturation process within an hour or so.

They must unfurl and flex their new wings.

Their orange eyes take on a deep red — in my view mesmerizing — hue.

     

Seen head-on, their faces look to me as if there is a car grill in the middle.

The adults can’t fly right away after emergence but must make several attempts to get airborne.

When the adults are ready to meet, the males begin making calls and songs, using a pair of ridged membranes on their abdomens. Some calls are a sign to gather; others are alarm calls made when the cicadas are handled.

 

 

Their hollow abdomens are thought to act as a resonating chamber, increasing the volume of their already-loud sounds, When they gather in groups of hundreds and more, the volume can be astounding, reaching the level of a chainsaw or motorcycle.

 

In our area, numerous inquiries on neighborhood listservs commented on the growing and ongoing noise:

  • Is there a sound like a siren going off that you can hear? It seems to be getting louder.
  • Perhaps the machines grinding rocks to expand I 40 [highway].
  • Alien invasion 😂
  • The noise is continual with no change in pitch or volume. Sounds man made.
  • This is some sort of machine or something running all day long.
  • I was so intrigued as well that I called the energy company to investigate the cause of the intense noise!
  • Miniature Flying UFOs made to look like Cicadas.
  • This morning, I walked inside my house looking 👀 for the toilet that I thought was running.

Some people made analogies for what they thought the cicada ‘songs’ were like:

  • To me it sounds like alien spaceships are landing – just like in a 1950’s creature feature.
  • It sounds like the flying saucers in old 1950s movies.
  • I think the 13-year bunch sound like the phasers on the original Star Trek show.
  • To me they sound just like 18wheel rigs all revving up their engines.
  • The sound to me is like “environmental tinnitus”. 🙂 [Response] Exactly, but it actually helps my tinnitus!
  • Sounds like heavy traffic in another decade or two with everyone driving electric vehicles. [Response] My hybrid has that same sound (only quieter) to warn people/animals that I am backing up. When my car is operating under battery power, it’s silent, so manufacturers added that sound to warn people and wildlife away. You are so right. That may be the sound of the future. AAAAGH!

Others appreciated this natural phenomenon:

  • Sounds great.
  • I guess I am rare in thinking they are cool. It feels other worldly….
  • And it’s all about SEX. Just think about all those teenage hot-rodders gunning their engines to attract attention. They’re all saying “Come and get me baby. I’m HOT.” After years underground, you would be too.

Finally, some listserv readers tired of all the comments after a while:

  • Please stop asking about the sound Cicadas make! Please! And if someone answers, why do 50 people feel the need to respond? I feel that so much of the posts are so religious. Does anyone else feel this way?… I didn’t mean religious ! I meant repetitive!
  • Cicadas are a plague sent from God signalling the End Of Time. The purple glow in the sky last night [Northern Lights] was the Rapture, and, since we’re still here … well, there’s that…
  • If you don’t like it stop looking at the posts.

In the next blog, I’ll explain a bit more about the periodical cicadas’ vulnerabilities and life cycle. And hopefully you’ll enjoy seeing some more photos of these creatures who won’t see the light again until 2037!

Nature Photo Challenge: Autumn colors, part 2: “shrooms!”

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One of my favorite things to spot during autumn outings are mushrooms, the fruiting above-ground bodies of fungi. The most abundant ones in our area appear to be white and ivory in color and it’s not unusual to find small “colonies” of them growing in fields and woods.

 

Admittedly, I don’t know much about fungi except that they play a very important role in the natural environment. Suzanne Simard’s book, Finding the Mother Tree, was an eye-opener for me regarding how trees communicate and thrive through use of underground fungal networks. I’m now looking forward to reading Martin Sheldrake’s book, Entangled Life: How Fungi Make Our Worlds, Change Our Minds, and Shape Our Futures.

And I want to read more of the scientific writing that is challenging ideas about cooperative fungal and tree networks and cautioning us to await further studies that can show how fungi and plants may both collaborate and compete.

 

In the meantime, I just enjoy looking for ‘shrooms during my nature walks. Some of the white ones have interesting shapes that remind me of corals. Others have veins of bluish color.

   

Some of the more beige/brown fungal fruits have shapes similar to the common white mushrooms. Sheldrake has pointed out how important it is that we learn more about all of them: “They are neglected in conservation frameworks, educational curriculums, and scientific and medical research. Part of the challenge is raising awareness of fungal life and the many vital roles they play in the biosphere, of course.”

   

Did you know, for example, that mycorrhizal fungi absorb “the equivalent of more than a third (36%) of the world’s annual carbon emissions from fossil fuels – every year?”

 

 

Some of my nature-oriented conservation colleagues know something about mushrooms because they enjoy collecting them for consumption. You do need to know a good deal about them, however, to do this safely as some mushrooms are poisonous. One easily recognizable one is the fly agaric mushroom with its pretty red cap dotted with white spots.

Although I went on a mushroom walk once where a knowledgeable leader encouraged us to collect specimens which he then identified at the end of the collection period, I admittedly am not so interested in learning which wild ones are edible. The cultivated mushrooms sold in stores satisfy my culinary tastes.

 

Spotting interesting clusters and shapes during outings is fun, however, and has led to interesting conversations with fellow walkers and photographers.

 

 

The color variations also attract me.

I always find the clusters of ‘shrooms with multi-colored lines appealing.

 

It’s also interesting to know that mushrooms can be used to create vivid dyes to color natural fibers such as wool.

 

Three of my fungal finds that were favorites this autumn are shown below. Their vivid colors really caught my eye from far away and they were quite large.

I’ll leave you with a find that has puzzled me as I have no idea what it is. Several green plants were covered with these fine white filaments. I don’t know if they were produced by fungi or some type of insect; my Internet searches have not produced an answer yet. If any of you readers know what this is, please enlighten me!  And have a nice day!