Night Time

Last night, walking home in the dark, I noticed that there were tons of pigeons huddled together on the streetlights. Since they're normally on the ground during the day, this got me wondering about how else the landscape of the lake might change at night. Would I find birds in different locations, or doing different things?

I decided to check it out. I also put the high ISO and flash powers of my camera to some serious testing.

The first, obvious answer was that, yes, the night herons really are active at night. They leave the freshwater duck pond and spread out to various perches overlooking the water. The storm drain outlets are usually claimed, as are the shallow water areas:

I wonder if they fish all night, or only early evening? These pictures were taken between 8 and 9 pm.
More surprising, perhaps, was the number of other birds that are awake and active at night. I spotted some scaups swimming around. I was surprised at first, but then remembered that a lot of scaups seem to be resting and floating with heads under wing for a lot of the day. Maybe they are somewhat nocturnal?



I also found some insomni-ducks:

A lot of mallards and some Canada geese were standing around on Swedish beach, in the shallows. They grunt-quacked begrudgingly at being woken up and forced to move into deeper water. You can see their eyes shining. At the Exploratorium, when you see the cow-eye dissection, one of the things they show you is a part of the eye called the tapetum. It's basically a bonus reflector in the eye that helps animals see in low light; it's also what causes the eyeshine in the photos. I noticed that the mallards' eye shine looks greener, and the geese eyes look redder. This could be a result of the flash color, too, or the angle of the light...

I found some more pigeons sleeping in a tree; seagulls were conspicuously absent. The highlight of the walk was two raccoons washing their paws and drinking from the duck pond:

While taking this picture, I was aiming at a completely dark area, hoping I found the right spot and that the flash would illuminate the racoon. I guessed right, but the camera focus wasn't cooperating... Check out the raccoon's eyeshine:

There is a raccoon inside of this thing. I didn't quite get the camera in time to capture its descent. What is it doing in there? Unknown. I'm guessing it's studying all the legal 3-letter Scrabble words.


I was surprised how much ambient light there was, allowing for a few nice shots.

How to photograph a goldeneye

Winter ducks are settling in here at the lake. Some of them, like these scaups, will ham it up for the camera if you even LOOK like you might be scattering some breadcrumbs:

(Lady scaup: "Crumbs PLZ!")

(Dude scaup:"A bit full actually, but I'll loiter just in case.")
Canvasbacks will come up if there's enough safety in numbers:

And I got a very nice shot of this ring-necked duck and her blue striped bill:

But a few of the winter ducks are MUCH more skittish, almost impossible to get close to--especially for my little point n' shoot. They can tell if you are looking at them. They can tell if you're not looking at them, but you ARE pointing your camera at them. And they HATE it when you do that. It's like they think James Bond trying to find them and destroy their space satellite or something.

So... you have to stalk them. Out in the park there's not really any "cover" to speak of, so my method today was to try psychology.

1) Find some other ducky that's about as far away as the goldeneye is and use it to set the focus:

Thanks, Mallard.

2) Walk toward the goldeneye, but don't look at it. Look at whatever is farthest away from it:

3) No seriously. Do NOT look at the goldeneye. Walk forward nonchalantly, thinking about how much you don't care about ducks. And hold your camera at hip level (still keeping the focus button depressed...)

4) The goldeneye (here, the lady goldeneye, depicted by the lovely Xenia Onnatop) will swim away from you anyway, using their characteristic "Russian Submarine" posture:

5) At the last second, look at your viewscreen out of the corner of your eye and put the goldeneye in the frame. You might get lucky and get a shot that's at least good enough to show the Golden Eye.

"I AM INVINCIBLE!"

The same method can be used for buffleheads:

(Lady:)
(And dude:)

Good OLD Lake Merritt

The Oakland Museum of California has a pretty cool "virtual collection" of old postcards, photos, posters, and other ephemera. You can search it by Oakland neighborhood, so naturally I used it to see what Lake Merritt looked like back in the day.

1977


1985

One thing I noticed was that there are several duck species in these photos that I have never seen at the lake. In the picture below, you can see a few wigeon(s?) just underneath the swan.

And in this photo you can see an entire horde of pintails thronging to be fed.

1920

I'm wondering if old photos like these have ever been used to collect data on population size.


1922


1920-1950


1930

How does the sun cut his hair? Eclipse it!

The thousands of geese at the Lake aren't the only ones getting a wardrobe makeover. Mallards also change their coats this time of year, and for a brief time they look terribly shabby and hardly any chic! I haven't gotten a great picture of it since, understandably, they like to hide from the paparazzi (and of course predators) during this awkward, flightless time.

On this mallard you can see that he's looking quite brown and scruffy around the eye, and it'll probably get worse as he continues to molt.

Pelicans are also supposed to have an eclipse plumage. Remember earlier when the pelican had that funny little head tuft? It has lost that, and is now sporting what looks like a bad case of head-mildew.

I remember reading that the beak bump falls off in one big chunk like a giant fingernail clipping. I'd love to find one of those lying around!

Hybrid Love!

Remember earlier when I wrote about the domestic-Canada goose hybrid pair? Well, it looks like they may have had some success in the baby department:

But wait! A THIRD goose is accompanying them as well! Which of these geese is genetically responsible for the babies? Until they make it onto an episode of Goose's Court, where Judge Goosy can require a paternity test, only they will know for sure!
Multiple adults caring for offspring is not uncommon in the bird world. (And in fact, not too long ago I posted about the group of 6-8 geese that seemed to be raising their goslings all together...) Sometimes one of the adults is a pair's child from a previous year. Other times, unrelated adults form cooperative groups. Recent studies that analyze the DNA of the young of supposedly monogamous pairs indicate that having a little something on the side is actually quite common in birds. More than half of a given clutch could be somebody else's! So, it's a strong possibility that this group of goslings are all candidates for My Two Dads. Either way, the young of such a group benefit from the extra Wii games and candy bars provided by a bonus relative.

Speaking of hybrids, I spotted this shocking scene taking place inside the Bird Dome:

Domestic-on-wild mallard action! But WAIT. That distinctive green head and yellow beak of the bottom duck signify a mallard--a MALE! Shouldn't he be on top? What's going on here exactly?

We can't know the sex of the white duck for sure, but cases of male-on-male duck action are documented in Blue Ducks and also, believe it or not, in alive-on-dead mallards, so this scenario is not that implausible. Some studies suggest that animals in captivity are more likely to engage in same sex coupling, perhaps as a stress release, possibly due to a shortage of the preferred sex, or because they're bored since they don't have cable in there. Or maybe they just like it that way.

Want more detail? Try this article from Scientific American:
Bisexual Species: Unorthodox Sex in the Animal Kingdom

As a side note, I installed Google analytics on my blog and found that I got the most hits on the day I posted the pigeon money shot. Wonder if this post will cause another spike? I might even reach a record *13* page views!

All the little beesies all the little bearsies never walk in threesies always walk in pairsies...

It's that time again:


Squirrel humping time! (Lydia took this picture--isn't it great?). I recently read in Hannah Holmes' book Suburban Safari that the reason you will often see stumpy tailed squirrels is that during the spring mating frenzy, several males will chase the same female and bite off each others' tails in their eagerness to get to the front of the line.

And squirrels aren't the only ones. Canada geese are getting mighty feisty as they defend potential nest sites (including one pair I saw on top of a chain link fence enclosing the water main. Pretty sure that's not gonna work, guys.) Last year, I saw a goose which was almost certainly a hybrid domestic goose/Canada goose. And this year I think I found its parents:


Other animals have made a bit more progress on the romance front, and are already building nests. Double crested cormorants are back at the lake with a vengeance, and some of them are sporting some very Doubleicious crests! They're shy though, so they only let me take pictures of them carrying their damp sticks when they're safe in their nest tree on Bird Island. Can you find Waldo--the cormorant with a stick?

And SOOOME birdies have already MADE their babies. Hummingbirds nest early, apparently so that their nestlings can fly long before hungry jays come looking for a snack for their own babies.
This isn't a great shot, but the baby is on the left looking straight up. Mom is on the right. And if these hummingbirds are going to continue being super fast while hiding in the dark canopy of a tree, that's probably the best I'm likely to get!


And of course there's mallards. They've been acting super crazy, with males chasing females through air and water while quacking up a storm. Mallards have some very disturbing reproductive biology which you can read about here. Once your jaw is back in place, enjoy these... DUCKLINGS!


(not pictured here are the FIVE drakes which were STILL chasing this lady about.)