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6

Obviously, as you point out, some birds, such as waterbirds (ducks, puffins, auks, sandpipers) are perfectly fine in the rain, as they spend much of their time in the water anyhow and have oil glands that waterproof their feathers. For other birds, rain can increase heat loss. For instance, rain increases metabolism by up to 22% in eagles (Stalmaster & ...


4

Cant be very sure about ravens but the maximum recorded flight duration is of Alpine Swift — 6 months. Pigeons can fly up to 1800km in a long flight. From this article: In the United States, the longest pigeon races involve flights of 1800 km and, because substantial financial rewards accrue to the owner of the fastest pigeon, there is severe ...


3

Apart from one isolated group of birds in Australia (i.e., mound nesters found in Australia that use external heat for incubation - see link), all birds incubate their eggs (see link). All species that returned from land to sea have retained their reproductive cycle (marine mammals still give live birth and suckle their young) and still rely on air for ...


3

There are actually a few, the problem with these websites is that they usually cover only a part of all birds on this planet. I use: Bird identifier: Usefull website for a lot of European birds. Backyard Bird Identifier: Useful for some European birds but mostly for North American and Canadian birds. All about Birds: Useful, but needs more knowledge for ...


1

I think it's a kingfisher. Luckily the tail is short. Some are larger, some smaller, yellow-, orange-, or brown-billed, but all with an intense stare, especially when they spot prey.



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