First, and undoubtedly oddest, is the Piip Show, which is a “bird reality show” (read: livestream from a birdfeeder shaped like a bar) from a Norwegian television network. Apparently this is an experiment in “slow tv,” which I did not know was a thing. Follow this link and click the red arrow in the bottom-left corner of the picture to watch live, or scroll down a few lines to watch a popular clip (the birds are at the end of the clip). As an American, I’m enjoying watching the exotic-looking-to-me birds like Blue Tits. Thanks to Rachel for the tip!
The Decorah Bald Eagles are back, and as I type this, a very small small grey-fuzzed chick is struggling to get out from under its rather bemused-looking parent.
The Cornell Lab of Ornithology maintains a number of excellent bird cams. My recent favorite has been the Laysan Albatross one on Kauai, HI, not least because the time difference means you can watch it in daylight even when it’s quite late for you if you live in the continental US. Also, the chick looks like a wet mop. The chick is named Kaloakulua and was recently identified as female. Sometimes she is visited by nonbreeding adult albatrosses doing lovely practice courtship dances, and it’s interesting to see how long the chick is left alone as the parents forage: sometimes they don’t return to feed her for weeks.
Albatross spend most of their lives in flight. They forage in the open ocean, where food may be separated by many miles, and they head for islands only to breed. They have been documented making around-the-world trips in just 46 days (take that, Jules Verne!) and flying for weeks at an average speed of 950 km per day (Croxall et al. 2005). That’s 40 km per hour, so you could beat them in a car (if you could stay awake that long), but still!
I am awesome.
Photo by Tony Linde
How can an animal spend so much time in such fast flight? How do albatross not waste away and die from the sheer energetic effort?
The birds of paradise have been getting a lot of attention lately for the elaborate courtship dances of their males, and nobody is going to argue that they don’t deserve it. But it isn’t all “males dance, females judge” in the avian world. The displays of male birds of paradise reflect high reproductive skew: a few males mate a lot, a lot of males never mate. It’s worth it to the males to devote incredible amounts of energy and resources to attracting females, because if they’re successful, they may sire many chicks. They can afford to spend all that energy and resources on crazy feathers and tricky dance moves because that’s all they have to do, parent-wise: they don’t help females build the nest or incubate the egg or raise the chicks.
Male Greater Bird-of-paradise. Photo by Ivan Teage.
But birds are diverse; the birds of paradise reflect just one point on a spectrum of mating systems. Near the other end are birds with low reproductive skew. Males of these species look pretty much like the females, and they contribute about equally to parental duties. You might expect that these species would lack dances the same way they lack meter-long curlicue tailfeathers, but some of them have dances every bit as formalized and elaborate as the birds of paradise. The difference is that these dances are duets.
Laysan Albatross pair performing courtship dance. Photo by Michael Lusk.
(Note on videos: I know clicking on videos is annoying. But it’s worth watching the videos in this post, I promise.)