Sunday ducks

June 29, 2025 • 10:00 am

It’s Sunday: time for a duck report.  The babies can’t be called “ducklings” any longer as they’re nearly the size of Esther!

These video and photos were taken on two days: June 16, and 17, so I’m a bit behind schedule.  But I have photos and videos taken since then, and eventually all will be posted. Yesterday’s zoomies, for instance, show that the ducklings flap their growing wings while scuttling across the pond, and even were able to take off a bit, like a Wright Brothers plane. Soon they’ll be airborne, and I’ll be a proud parent.

First, though, here’s Esther, a fantastic duck mom. Below she’s flapping her wings and cleaning herself in the pond,

And a video of her ablutions. You can hear her quack: Esther’s voice! And remember, only female ducks (“hens”) can make the classic duck quack. Males (“drakes”) make a low sound that is not very quack-like:

Esther playing flamingo by standing on one leg:

Two more of Esther quacking and preening on The Rock, a flat rock in the middle of the pond where the ducks like to stand. First, she quacks:

Then she shakes herself dry (below). The blue feathers with white edges are called the duck’s speculum.  Both males and females have the ornamentation, and I don’t think we understand why it evolved.  My own view is that it helps ducks recognize other members of their species, and that’s what the Wingtrip site says, too:

So why have a speculum? Obviously being flashy in coloration is important to ducks, otherwise it wouldn’t be such a prominent, genus-wide trait. Both sexes have sepeculums, which could lead us to believe that this color wasn’t generated by sexual selection. And this would be a decent assumption, as it’s broadly accepted that speculums are there for signaling between birds in the air, aiding in important flocking behavior.

Birders and ornithologists know we don’t usually see Anas ducks on their own. Just think about it yourself, how often do you see a lone Mallard? Infrequently, as they are usually paired up, raising ducklings, or in flocks. These gregarious birds need to keep track of each other for a variety of reasons. Safety in numbers (and in homogeneity of flocks) during movements being paramount, the speculum is likely the ticket (along with vocalizations of course). In air it’s out there, flashing reflections all over the place for all to see. On the ground it’s tucked away, allowing mothers to stay hidden on nests and studly males to not be too conspicuous.

That sounds about right to me.

When you hang around ducks you realize that they really are beautiful, with the males all decked out by sexual selection with green heads, yellow bills, and white neck rings, while the females, who must be cryptic on the nest and when shepherding their ducklings, are mottled brown, blending perfectly with the ground and foliage when they’re on land. And there are, of course, those lovely speculums (specula?).  I still have a few speculum feathers from Honey, for mothers in the pond molt after their babies fly, losing all their feathers and growing new ones. (They lose them gradually as they grow new ones, so they don’t go bald!) Feathers are crucial, but also subject to a lot of wear and tear in the air and water, and so a new set is regrown each year.

The ducklings always play around after lunch and dinner, but are more quiescent at breakfast. After playing (see below), they will preen in the water, and continue the preening as they repair to the pond ledge to sun themselves and dry out (below):

Here they are playing (if it is “playing”!).  I often wonder whether they enjoy this, or are driven by impulse to behave in ways that will be adaptive in the wild. Of course, if there is some sort of duck “fun,” then that would prompt them to do stuff like this, stuff that could help them take off from the water or escape predators. So let’s just assume they are enjoying this!

After eating, zooming, and preening, they often form a pile o’ ducklings, though this is less common when it’s hot (remember, they are wearing down jackets).  Below is one pile o’ ducklings. Notice that they like to stay close to their brothers and sisters. Esther, of course, is keeping watch over them, standing on the right side of the frame.

Pile o’ ducklings:

Yes, they look chubby, but they really aren’t.  They are just healthy and well fed, and their crops are full of duck pellets that they’ll digest later.

Zoomies! This is the best part of duck tending. They get all excited for reasons unknown, and this happens almost invariably after the afternoon meal.  Then they have drag races across the pond, or dunk themselves like donuts in coffee, or swim underwater. It all makes for a great show, and we have to tell people nearby to watch the ducks, as this happens spontaneously and is over quickly:

More diving, dunking, and zoomies. Be sure to watch at the end (starting about 1:30( when Esther kicks off the action by flying. I wonder if the ducklings zoom to imitate her. Notice how some of them flap their wings as they zoom:

Getting out of the pond for preening and napping:

Here’s a duckling about to take a nap. Notice that they have two coverings for their eyes.  His/her eyes are open in the first picture, but then covered by the nictitating membrane in the second. Shortly this duckling will close its eyes using the main eyelid and head to dreamland.

We of Team Duck always have all our ducks in a row. Note Esther, who always stands at the end to oversee the brood while they nap (she naps, too, but not as often):

And just to remind you: here’s the brood photographed on May 7, shortly after they first entered the water.  In only seven weeks they got to the size above. (Note that there were seven. One disappeared the first evening, but we’ve had six ever since.)

13 thoughts on “Sunday ducks

  1. So cute and wonderful – and the pond is beautiful with freshness…

    I’m intrigued by the etymology of speculum, being very close to mirror as I gathered from reading German speculative philosophy, where they would reflect ideas … etc.

    I think I wrote this same idea a while ago with regard to the duck speculum…

    🐥🦆[no hen emoji due to budget cuts for Apple Vision Pro]

    1. In the 18th century, the mirrors of astronomical telescopes were made from an alloy known as speculum metal, a mix of copper and tin which could be polished to make a highly reflective surface. Isaac Newton, William Herschel and Lord Rosse all built telescopes with mirrors of speculum metal.

      Today, by contrast, the largest astronomical telescopes have mirrors of low-expansion glass which are vacuum-coated with a very thin layer of aluminium.

      1. Yes! Thanks! Really insightful… maybe the colors of the feathers refer to the color of individual metal solutions … hmmm… or it just looks like a mirror… I wonder who chose the word for the duck feature…

    1. “I often wonder whether they enjoy this, or are driven by impulse to behave in ways that will be adaptive in the wild.”

      Not a biologist myself, but I suspect ducks (and many other animals–at least, other birds and mammals) probably do enjoy play; they “play” because they enjoy it. But why do they enjoy it? Because it’s adaptive; it’s practice for important survival behaviors (including social behaviors). The enjoyment–the intense desire to engage in the behavior–evolved (was selected for) for play, for eating, for mating, because those behaviors are essential to survival and reproduction.

      EDIT: Didn’t mean to post this as a reply to someone else’s comment–sorry!

      1. I agree. There’s no reason ‘play’ cannot be both enjoyable and adaptive with both impulse and enjoyment driving the activity. I had a physiology prof. who insisted that non-human animals did not ‘play’. To me this always seemed like just abolishing the word ‘play’ because I have no doubt that humans ‘play’ for the same reasons, enjoyment and impulse driving behavior that is generally adaptive. Do humans ‘play’ in ways that turn out to be maladaptive? Certainly. So do other animals, but overall the ‘play’ behaviors are adaptive.

  2. Great videos. They have so much clean room in the refurbished pond! I have always loved the zoomies, but this is the first year I have seen them swimming underwater…likely because this is the first year the water is clear enough to see them. Their body motion reminds me of seals.

    1. I never really noticed that ducks spend that much time underwater.

      It’s interesting to see Esther ever watchful while the ducklings seem largely indifferent to her and, yet, still clinging together. I guess just part of maturing?

      And as before, there’s one duckling that just won’t get out of the water. I wonder if it’s the same one.

      The pond really is beautiful. Thanks as always.

  3. I always enjoy Duck Season with PCC(E). Amazing how the little critters grow so fast.
    Lovely, and it allows people in Chicago to imagine they have a real summer except a month or so of scorching. 🙂

    D.A.
    NYC

  4. You are probably right about the specula being species identifiers – like roundels on the wings of military aircraft. Here in the UK, Mallard have blue specula, teal have green and Gadwall have white ones.
    On the question of the zoomies: from my Awareness Horizon perspective, above the horizon the birds are simply doing what they enjoy with no knowledge of why they do it. In the world of selfish genes and mechanistic process below the horizon it is necessary to exercise their muscles and body co-ordination and speed, so that they are fast enough to escape predators if they are attacked.

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