PCC(E)’s wildlife photos and videos: Duck update

The “ducklings”—if you can call them that now that they’re fully feathered and miniature adults—are almost six weeks old: they hatched on July 25 and came to the pond the next day. All is well with them: they all seem healthy and lively, and they eat heartily, though Miss Duck allows the babies to eat before she does. It’s hard to get food to her as her brood tends to scarf it up.

The babies are already starting to flap their wings vigorously, as you can see in the videos below, and I expect that in about 2-3 weeks they’ll be trying to fly, and levitating a bit. I suspect that the “zooming” behavior you see below is both fun but also practice for taking off.

But first some photos. First, Miss Duck, the ever-attentive mom who is still monitoring the babies closely. She’a also starting to molt, and during this period she will be able to flap and levitate a bit, but when she molts her flight feathers she’ll be pretty much grounded for a couple of weeks.

First, Miss Duck on the water. I love this photo, what with the reflection and all. (I posted it the other day.)

On the edge of the pond, watching her brood. Notice that her foot is on the side and not underneath her:

And a glamour head shot. If she returns next year I’ll be able to recognize her by this distinctive beak pattern.

Here’s the brood crossing the sidewalk in the morning so I can feed them in the channel. As soon as they plop in the water (I won’t feed them on land), they immediately turn and face me, waiting for their duck pellets. They know the drill!

Make way for ducklings!  You can see that Mom is still larger:

Sleeping on the water six days ago (iPhone photo). Mom is floating:

Often Miss Duck and the brood will get the “zoomies” after a meal. Usually initiated by Miss Duck taking off and flying a short distance in the pond, the ducklings go wild, zooming across the pond at high speed chasing Mom, as well as dunking themselves and swimming underwater. I’m convinced that, with Mom’s prompting, this behavior prepares them for flight. Notice how they often flap their wings during the exercise.

I’ll show two bouts. This first one took place after third breakfast a week ago (they get fed three times a day):

And here’s a vigorous case of the soomies yesterday:

The babies also “dabble” after meals. In the wild, they get most of their food by going butt-side up and thrusting their beak into the pond bottom, taking in some mud and then squeezing out the dirt but keeping the edible stuff (worms, other inverts, etc.). As I’ve shown before, ducks have “teeth”: serrations on their bill that allow them to get rid of the inedible stuff and keeping the food. In this way they’re like baleen whales.

Since the pond bottom is gravel and not dirt (a huge mistake in the pond design), the dabbling takes place in the dirt in the few pots of plants that they’ve put in the pond, which have dirt in them. Unfortunately, the plants cannot spread because the pond bed is gravel. It’s beyond my ken why they designed the pond this way, for it will prevent the luxurious growth of aquatic grasses and water lilies we were promised when the pond was reopened.

Here’s one duckling dabbling in an empty plant pot in mid-August.  At this time they still had their duckling fuzz, but you can see the feathers coming in. Now they are fully feathered and fuzzless, but their flight feathers have a way to go.

And here’s a napping duckling with almost all the feathers grown in.  There’s still a patch of fuzz on the butt and neck.

Ducklings napping on the edge of the pond. They always do this in the full group of four, and Miss Duck is among them, usually at one end of the line so she can watch them all. The “white” covering in the eye is their nictitating membrane.

The babies are starting to develop the speculum: the patch of blue  secondary wing feathers that you can see on Miss Duck’s wing above. It is one of the landmarks of attaining adulthood.  I’ve circled the nascent speculum in the first photo. Curiously, we’re not sure what this speculum is for. It’s present in both sexes, but could be the result of mutual sexual selection or selection for species recognition.

The nascent speculum is clear here:

The brood heading to one of the three Sacred Rocks to rest after a meal. There’s lot of dunking and preening before they settle down. Notice that Miss Duck gets up on the rock to let the babies know where to go.

DANGER!  There is a nest of Cooper’s Hawks (Astur cooperii) in the quad, and the young hawks often inspect the pond. Miss Duck sees them before we do, and she warns the babies with a specific quack. They immediately become motionless. While I’ve seen the hawks fly low over the pond, they’ve never tried to take a duckling, thank Ceiling Cat.

These photos were taken three days ago by my friend Peggy Mason, a neurobiologist on Team Duck. The tree is adjacent to the Pond, but I let Peggy take a few pictures before I chased the hawk away.

The definitive ID comes from Bruce Lyon, who looked at the photos and said, “Yes I think it’s a Cooper’s. I had to double check that it was not a broad-winged hawk. Looks like it is molting its tail so it is shorter than typical and a long tail would indicate Coopers’.”

And we musn’t forget the turtles. We now have six of them. We originally had five but one died (I was told, without proof , that its shell was cracked when students were playing Frisbee with it). But then a student found a large red-eared slider on the Midway, far from the pond, and carried it over and let it jump in. That made five again. Then a smaller red-eared slider appeared, probably another willful introduction.

They are all well and many people come to watch them. A group of women who work in the Regenstein Library regularly visit, and they’ve named all the turtles after hamburger-ish sliders, like “Buffalo Chicken Wing” and “Beef”. Unlike me, they can recognize every turtle.

A few photos of our terrapins. Here are four sunning on the rocks and doing Turtle Yoga, stretching their limbs to catch the sun:

You can see why they call them red-eared sliders (Trachemys scripta elegans):

Finally, two videos showing the turtles. This first one also shows some of the seven species of fish we have in the pond. All are naturally-occurring (as are sliders and ducks), but there are four pesky goldfish that someone is going to remove and put in an aquarium.

This turtle is going after some leftover duck food, but they do get fed a healthy diet of turtle food (not by me):

This video shows how they swim around. They’re quite fast in the water when they’re in a hurry, in contrast to their slow ambling on land: