Ducks (and turtles) at Botany Pond

April 8, 2026 • 9:00 am

Please allow me to show you pictures of my children, which this year comprise a pair of mallards (Anas platyrhynchos) and a pair of wood ducks (Aix sponsa). The latter don’t seem to be breeding here as they’re on the pond most of the day, and because female wood ducks nest in tree holes, and we ain’t got any.

The female mallard, named Vashti, is nesting nearby, but I’m keeping her nest location as secret as I can as I don’t want people disturbing her while she’s incubating her clutch of seven eggs. I expect a hatch about April 19 or so.  The male mallard, named Armon, patiently awaits Vashti, who comes down to the pond once a day to have a big feed and a bath and preening session. Those sessions last about 15 minutes, but Armon, a lovesick drake, patiently patrols the pond for about 23 hours and 45 minutes per day.

The wood ducks are absent in the mornings but then are at the pond most of the rest of the day, which tells me that the wood duck hen is not sitting on eggs.

But have a look at these gorgeous wood ducks: feathered jewels. I’ve added a few photos of our resident turtles, red-eared sliders (Trachemys scripta elegans). Of the five we put in last fall, I’ve seen two or three. The other turtles must have either died during hibernation or simply walked away from the pond.

Below: the wood duck pair, whom I haven’t named as no names suggested have seemed appropriate. This is an example of extreme sexual dimorphism, as you can clearly see. Why females chose males with those patterns, colors, and a crest is something we don’t understand. But it’s clearly another example of sexual selection in birds, something that ultimately devolves to the difference between the sexes in gamete size and investment. (Yes, there are two sexes in all of these animals.)

Do click on the photos to enlarge them.

The male.  I can’t get enough of seeing him and marveling at his beauty. The only other wild duck to rival this phenotypic glory is that of the male mandarin duck (Aix galericulata), a species found in East Asia. Wood ducks, however, are natives here.

He has satanic red eyes, but really is very gentle (also quick and much smaller than a mallard):

Here’s a video of the male and female wood duck having their lunch at Botany Pond:

Wood ducks seem quite romantic to me. They are always very close to each other and sometimes the male nuzzles the female.

I need names! The hen:

They are quite plump, as I ensure that they never go hungry.

Armon doesn’t really like the wood ducks, but somehow knows to chase them halfheartedly, as you see him chasing the male wood duck here.  When an undocumented drake flew into the pond last Saturday, and began chasing Vashti off her nest (he was clearly eager to copulate), Armon went after him big time.  With the help of Armon, a lot of running and yelling, and my trusty Super Soaker, I finally managed to expel the intruder. Here Armon goes after the male wood duck, who is much faster and more agile.

This is my favorite picture of the pair. They both have their heads cocked, probably looking at something above like a hawk.  Ducks have eyes on the sides of their heads, and so must cock them if they want to see above. It’s very cute when they do that, and rare to see a pair do it simultaneously:

The hen has iridescent feathers, too, but they’re less conspicuous and usually covered by the wings. They are probably byproducts of the colors that are exaggerated in males. You can see some of them below:

Have another picture of my boy:

The male woodie standing on one leg, doing his flamingo impression. (Ducks do this to conserve heat, and this was a chilly day.)

As I said, Vashti is incubating her eggs, but she comes down to the pond for about 15 minutes per day for a nosh and a bath. Here’s part of her preening session, which is quite vigorous. Shortly thereafter she flew off to her nest. Note that Armon stays nearby, as he gets only a few minutes per day with his mate and lady love.

And we mustn’t forget the turtles! On warm days they come out of the water to soak up sun on the rocks, extending their limbs to get as much heat as possible. We call this “turtle yoga.”

The long claws tell us that the one below is a male (they use the claws in courtship):

The woodies are still here

April 3, 2026 • 2:27 pm

The woodies seem to fly in every day about 11 a.m. and are still here when I leave about 2. I still have no names for them, as nothing suggested struck the right chord.  Here’s a preview of the next set of duck photos, which will concentrate on the wood ducks as Vashti is nesting.

Feel free to suggest names, which should reflect the fact that they’re perky and gorgeous. (The last pair was named “Frisky” and “Ruth”, with Ruth having a Jewish name.)

Click to enlarge:

Readers’ wildlife photos

April 3, 2026 • 8:15 am

Edmund Ault has sent us some photos of mallard (Anas platyrhynchos) ducklings, and you can never see too many of these.  (We should have some in Botany Pond by April 19.)  Edmund’s captions are indented, and you can enlarge the photos by clicking on them.

These ducklings are on the River Witham, in the centre of Grantham, Lincolnshire, and are the first I have seen this year. I regularly feed the ducks on this stretch of river, but I wasn’t aware that there was a nest until I saw the brood this morning; I think they must have hatched first thing this morning (31st March). And what a brood it is: 16 ducklings!

Most of the brood are sheltering under their mother:

More:


The mother duck led her brood for a walk away from the river; when she got back to the river she happily jumped off a small concrete wall (about 3 feet high) and expected her brood to follow suit – which all of them did, although reluctantly:

The brood moved upstream and tried to scale a weir; although the weir is only about a foot high the rush of water was far too great for them and eventually they turned around and went back:

We have wood ducks!

March 29, 2026 • 9:30 am

Botany Pond now harbors (temporarily, I think) a pair of the most beautiful American ducks:  wood ducks (Aix sponsa), in the same genus as mallards. At first I mistook them for mallards on the duckcam, but when I went down to investigate, it was clear that they were a bonded pair of woodies.

I love these ducks, but one or two show up at Botany Pond only every couple of years, and they do not breed here. We had a post-breeding pair, Frisky and Ruth, a few years ago, but although they hung around a while, it was after they had bred, and they were probably headed south. My photos from that era have disappeared from this site, but here is Frisky nuzzling Ruth. It’s one of my favorite duck photos (I like to imagine that wood ducks are very romantic!):

Frisky was so named because although the mallards chased him, he was very quick and adept at sneaking among them at feeding time to get pellets. After he filled his belly, he’d get quite rotund and then perch on a knob of the bald cypress that used to be in the pond. He used that knob so often we called it The Sacred Knob.  Here he is having a postprandial rest. Look at those colors!

Males have satanic red eyes. Here’s a closeup of Frisky’s head. Their bills are short compared to those of mallards.

They’re called “wood ducks” because they nest in treeholes and perch on trees—nearly the only species of duck to do so. Sure enough, when I first saw them a few days ago, they were both up in trees next to the pond. I thought they left, but, sure enough, they were back three days ago and haven’t left since.

Some photos of our new pair.  Feel free to suggest names, but they should be fitting for these glorious birds.

The new male:

. . . and the new female. The shots aren’t great as I took them in the early morning when it was light, and the shutter speed was slow:

Wikipedia describes them like this:

The adult male has stunning multicolored iridescent plumage and red eyes, with a distinctive white flare down the neck. The female, less colorful, has a white eye-ring and a whitish throat. Both adults have crested heads. The speculum is iridescent blue-green with a white border on the trailing edge.

Besotted with each other, the ducks are always together. Here are two videos of our new pair swimming together:

In this next video, the male gives her a little kiss 6 seconds in. He then chirps at her (they don’t quack).

The loving couple. Look at that sexual dimorphism!  These ducks are in full breeding plumage:

Vashti is nesting nearby, and Armon is always in the pond waiting for her to drop in for a quick snack, a drink, and a preen before she hurries back to her nest.  There are seven lovely green eggs in Vashti’s nest, and I anticipate ducklings will hatch around April 20 (a bit early in the season) if all goes well.

Armon chases the woodies, but only in a desultory manner, and they manage to sneak some of the food I give him.  At other times he allows them to rest next to him on the rocks.

Here’s Armon halfheartedly chasing the female.  He never gets near either of them as they swim faster than he, and they can simply jump out of the pond when they’re tired of being chased.

Ducks on the rocks (a good name for a drink). You can see that Armon doesn’t mind them being nearby so long as it’s not feeding time. The size difference between mallards and woodies is clear:

The male is like a feathered jewel!  Here is the range of Aix sponsa from Wikipedia. As you see, Chicago is in their year-round range.

Cephas, CC BY-SA 4.0, via Wikimedia Commons

You might be able to see them on the DuckCam if you look now, but keep looking from time to time.  In the meantime, feel free to suggest woody names, and get ready for mallard ducklings in a few weeks.

I think the woodies will soon depart to breed in a place where there are trees with holes.

I’ll add a Smithsonian video of a large clutch of hatched woodies jumping about 50 feet down to the water as mother calls them:

DuckCam is up!

March 25, 2026 • 11:00 am

They have finally turned on the DuckCam (or PondCam, if you will) at Botany Pond. There’s a good view of nearly the entire Pond, and you are likely to see Armon there; in fact, he’s should be there now. A few minutes ago there was another pair that I drove off, as we don’t want to couples nesting at about the same time.  Oh, I forgot to add the important note that Vashti has begun incubating her eggs at a secret location (I know where it is), and we should have ducklings in a bit less than four weeks!

Even the channel is visible now, to the right behind the lamppost.

Duck report!!!

March 24, 2026 • 8:30 am

It’s time for a duck report.  Things have been erratic, duckwise, over the last couple of weeks, with the weather going nuts. On some days it’s been 70°F (21°C), on others it’s been below freezing, with snow or driving rain.  Through it all the ducks have been here, though in the last week or so Vashti makes only sporadic appearances.

Usually Vashti (the hen) has been absent in the mornings, leaving Armon (the drake) to sit disconsolately on the rocks, staring into space. It’s clear he wants to be with his boo, and only Ceiling Cat knows where she goes.  I suspect she’s building a nest somewhere and perhaps laying eggs (1 per day until they’re all laid).  But she can’t be incubating eggs yet, as she returns in the afternoon for hours, much to the delight of Armon, who begins eating again. This is a true duck romance.

It’s a bit early to incubate eggs, as the weather in April may be cold and rainy for ducklings. But I can’t control wild birds.

The breeding goes like this. First, Vashti will build a nest. They’ve almost always been on the window ledges of the building to the east of Botany Pond (Erman Hall), but I see no nest there, and if she were breeding there Armon would be in the water under the nest. Nor is she nesting under the tree where Esther nested last year. I have no idea where the nest is, and of course I can’t follow her.

As I said, hens lay one egg per day, but don’t start incubation until all the eggs are laid, whereupon she sits tight on the entire clutch, ensuring that all the embryos begin development at the same time and that they will hatch within a day of each other. The incubation period is 28 or 29 days, so when Vashti disappears, I begin the countdown. (I’ve already ordered a big stock of duckling food.)  During incubation she may come to the pond every day or so for a very short period to have a bath and a feed (if I’m lucky enough to see her). But she won’t leave the eggs for very long.

During incubation, wild mallards can lose up to 30% of their body weight as they neither eat nor drink.  Vashti, though, is pampered and can get fed during incubation. My intention is to feed her up so she has plenty of mass and energy to incubate the eggs, and, when she begins incubation, to watch the pond from my office to run down and feed her if she makes a short appearance. This will ensure that when the babies arrive, mom will be in good condition to tend them. That worked well for Esther last year, though she nested on the ground under a tree.

But I’m jumping the gun. Here are some photos and video I took over the last couple of weeks. Since the weather has been miserable, the sunny-day photos were all taken about the middle of March when it was warm.

Here’s a panorama of Botany Pond. Can you spot the pair? The answer is at the bottom.  Erman is the building to the left, and you can see the two pond-watching benches. There is a narrow channel of water behind where I stood to take this photo.

Armon and Vashti having luncheon:

Their main diet is Mazuri Waterfowl Chow, which provides a complete diet for ducks. New ducks usually must learn that what I throw them is what they should eat. (At first they are frightened.) But this pair learned quickly, which made me suspect that they are familiar with Botany Pond and the feeding ritual. Perhaps they were here in previous years, and one or both of them may be the offspring of Esther and Mordecai from last year. I whistle to them at feeding time, and they swim to me when they hear me or see me (they knew this from the outset). This again constitutes evidence that these ducks are familiar with Botany Pond.

Here’s a video of them having noms (Mazuri pellets):

After the pellets they get dessert: freeze-dried mealworms, their favorite. Mealworms are pricey but I don’t stint on them at this stage, since Vashti needs to be fattened up, and mealworms are a good source of protein.

Butt view of the pair swimming away:

Mallards on the rocks (a good name for a drink):

They are a handsome couple, no?

Lately they have actually been coming out of the water to greet me when I call. But I let them go back into the pond before I feed them, as they need to sip water during and between bouts of eating pellets and mealworms:

One day I watched Vashti foraging on the ground after lunch.  I have no idea what she’s finding to eat in all the dirt and mulch, but she was very busy and clearly finding noms. Worms, slugs, whatever:

Here’s a video of Vashti foraging on the ground. Armon is of course nearby (they are never separated by more than a couple of feet when they’re in the water). Armon peeks over the ledge to see that his hen is okay. Notice her full crop!

And, ladies and gentlemen, comrades, brothers and sisters, here is Vasthi in all her mallardly glory. She’s pretty plump, which is how I want her when she starts incubating her eggs:

And we can’t neglect the handsome Armon, all decked out in his breeding plumage:

I will of course keep you updated, though I wish I knew where the nest was!

Finally, here are the ducks in the pond panorama, circled:

Readers’ wildlife photos

March 22, 2026 • 8:15 am

Today we have some travel and wildlife photos from reader Jan Malik.  Jan’s captions are indented, and you can enlarge the photos by clicking on them. (Don’t miss the Taiwan barbet!)

Here are a few pictures I took during my short stay in Taipei, Taiwan (Republic of China) in 2016. Business trips usually allow very little time for sightseeing — the familiar, morbid cycle of airport → hotel → conference room → hotel → airport — but on this occasion I had a few free hours in the afternoon. Naturally, I decided to explore the nearby Taipei Botanical Garden with a birding lens that mysteriously strayed into my suitcase:

On my way to the Botanical Garden, I visited the National Chiang Kai-shek Memorial Park and Hall, the latter built in the late 1970s after the President’s death. I include it here for documentary reasons — who knows how long it is going to survive, given the volatile political situation.

Inside stands a larger‑than‑life sculpture of the Generalissimo. Taiwan’s history is typical of right‑wing dictatorships which, like South Korea, Spain, or Portugal, began as oppressive authoritarian regimes and then evolved into genuine democracies. Conversely, left‑wing dictatorships typically resist fundamental change and persist until their eventual collapse:

Onward to wildlife. The entrance to the Mausoleum was guarded by a lion (Panthera leo var. lapideus):

Already in the Botanical Garden, I encountered a cat, doing what cats do best – contemplating:

In one of the alleys I came upon a sizable crowd — people were observing local celebrities, a pair of nesting Oriental magpie‑robins (Copsychus saularis). The birds seemed completely unfazed by the attention, the male singing and standing guard at the nest;

These birds are bold and well adapted to human habitats. The female does most of the feeding; here she brings an unidentified moth to her chicks in a rotted‑out branch stump:

At a nearby pond I spotted a duck. It was likely a domestic bird, possibly with a dash of wild Mallard  (Anas platyrhynchos) ancestry:

The pond was full of lotus plants, which provided excellent habitat for the Common moorhen (Gallinula chloropus). Like all rails, these birds have relatively small wings and strong feet, well suited to foraging on land as well as in water. They swim well despite lacking webbing between their toes. These traits help explain why, when rails successfully colonize remote predator‑free islands, they often evolve reduced flight or complete flightlessness;

Moving further along the park alleys, I spotted a Taiwan barbet (Psilopogon nuchalis) looking out of its nest cavity. As an endemic species, it was a special find for me. Barbets vary widely in sexual dimorphism — in the Taiwan barbet the sexes are practically indistinguishable, in others (like the Coppersmith barbet) the differences are subtle, and in still others (such as the Red‑and‑yellow barbet) they are striking. I wonder why, in this species, bright coloration in females is not maladaptive. Perhaps the fact that they are obligate cavity nesters shields incubating females from predators. The same logic applies to woodpeckers, whose sexes are also similar aside from modest red patches in males:

Shortly after the barbet, I hit another jackpot in my endemics count — the Taiwan blue magpie (Urocissa caerulea). Like other corvids, it is social and omnivorous, and like Taiwanese barbets, it is sexually monomorphic. Corvids also evolved cooperative breeding: fledglings often remain with their parents and help raise the next brood. This likely evolved through kin selection. Why does it work so well in corvids and not in most other birds? Perhaps in environments with limited resources, young birds have better reproductive success by helping relatives than by attempting to breed independently?:

Having spent some time observing the magpie, I moved on — my remaining time before the flight was getting short. Soon I saw another first for me, though a common sight in Southeast Asia: the light‑vented bulbul (Pycnonotus sinensis). An omnivorous bird, here it was about to snatch a ripe fig:

Moving on, I photographed a dragonfly, which I believe is a male Crimson Marsh Glider (Trithemis aurora). These insects are sexually dimorphic, with olive‑colored females. This male appears to be orienting its abdomen toward the sun to reduce the surface area exposed to solar radiation and prevent overheating — a behavior known as “obelisking”:

Near the Botanical Garden exit I saw the last animal in this series, the Eurasian tree sparrow (Passer montanus). They always bring a smile to my face. Unlike many other sparrows, the sexes are alike. In 1958 they were targeted during China’s “Four Pests” campaign, a fine example of how ideology can override basic biological understanding:

While driving toward the airport that evening, I saw a Buddhist temple by the roadside, adorned with a symbol that, in European cultural circles, evokes entirely non‑religious sentiments. It was adopted in the 1920s by the National‑Socialist German Workers’ Party, but in Asia it is an ancient religious emblem. It is not identical to the Hakenkreuz — it “rotates” counterclockwise — and its meaning here is entirely benign: