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Some Hokkaido Winter Passerines

10,000 Birds

Given how far Hokkaido is from Europe, it seems a bit surprising how many bird species wintering on this Japanese island have a name starting with “Eurasian” Or how many of these species I have also seen in my parents’ garden in Germany. In science speak, this is named the optimal body mass hypothesis.

Iran 178
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Birding Shanghai in January 2023

10,000 Birds

I tried to get a better idea of what exactly the definition of cuckoo-dove is but am still not very clear about it – Wikipedia only offers the rather formal definition “any of several species of bird in the genera Macropygia , Reinwardtoena, and Turacoena of the pigeon family.” But I may well be wrong.

Geese 147
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15 Australian Birds (Episode 6)

10,000 Birds

According to Tim Low (in “Where Song began”), “so easy were they to breed that by 1859 they cost less to buy in London than in Sydney.” ” Funny how the difficulty of breeding a species can be illustrated in simple monetary terms. We even had some chicks – not that this was a big achievement.

Australia 147
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Urban Ornithology: 150 Years of Birds in New York City–A Book Review

10,000 Birds

The book is divided into three parts: “Introduction,” “Avifaunal Overview,” and “Species Accounts.” The authors’ detailed delineation of problems with the accuracy of NYC breeding bird surveys or with the limits of historical writings may test a reader’s patience. Most birders will go straight to the “Species Accounts.”

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The Parable of the Goat Mites

10,000 Birds

And so, these goats ate the flora of the island: unique species of Indian paintbrush and woodland star, bushmallow and wirelettuce and morning glory. No wait, they were, but they had experienced so much genetic drift and selective pressure that they now constituted a unique breed in their own right.

Goats 161
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How The Bird Got Its Beak

10,000 Birds

The feature distinguishes birds from other species; All birds have them, no other species do. Beaks vary across different kinds of birds, and this great diversity in beaks is part of the great diversity of the 10,000+ species of birds that exist today; Beaks thus facilitated the diversification of birds. Here’s the thing.

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A Question of Migration

10,000 Birds

Even if you don’t live in the summer range of a particular species, you may have opportunities to observe it while it passes through, especailly if you live in an active flyway, like I happen to. Because the ancestor of this species of bird migrated, and the migratory adaptation and all that entails were passed on.