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Birding the Datang area, Yunnan

10,000 Birds

A paper on the species asks the important question “Does nest sanitation elicit egg rejection in an open-cup nesting cuckoo host rejecter?” ” To rephrase: if you put some trash into a nest of a bird along with a cuckoo egg, does that improve the chance that the cuckoo egg will be kicked out? How to find out?

Eggs 246
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Baby Spotted Dikkop

10,000 Birds

One could have been just another cat-triggered tragedy ( keep your cats indoors ) turned into an unforgettable experience… My wife and I (retired) had a truly wonderful experience at the end of 2011 when our cat brought in a newly hatched Dikkop. We raised this little fella to a young adult. A very special experience!!

Senegal 259
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The Common Cuckoo and The Evolution of Mimicry

10,000 Birds

In this way, the cuckolding Cuckoo can convince its cuckoldee, the Reed Warbler, to back off when the Cuckoo comes around, allowing the Cuckoo to toss out one of the Warbler’s eggs and replace it with one of its own, to be raised by the hapless Warbler parents. However, Reed Warblers are social learners.

Hungary 216
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Fledgling Barred Warbler

10,000 Birds

They are often raised by single mothers after their deadbeat dads disappear: Once the pair have mated, the female lays a clutch of three to six eggs and the male bird may abandon the female to take-up a new territory, in attempt to mate with additional females. You know what is interesting about Barred Warblers?

Hungary 225
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Some Ingenuity Can Go a Long Way

10,000 Birds

Among birds the Egyptian Vulture uses rocks to crack Ostrich eggs, the New Caledonian Crow and Woodpecker Finch (one of several Darwin Finches of the Galapagos Islands), uses sticks to extract grubs from inside a branch. Further support for inherent behavior comes from experiments. The use of tool by animals is surprisingly rare.

Fish 176
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Life Along The Delaware Bay: A Book Review

10,000 Birds

As a Northeast birder I am familiar with the alarming decrease in the number of Red Knots along Atlantic shores and have signed petitions and written e-mails calling for legislation and rules that will limit the overharvesting of the horseshoe crab, whose eggs Red Knots depend on. million in the late 1990’s. Should the gulls be controlled?

Delaware 237
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Birding Villahermosa’s Urban Parks

10,000 Birds

Being a westerner — raised in California, and now living in western Mexico — I was perhaps most excited about the migratory birds that breed in eastern North America. And then there was a Green Heron , not only showing us its nest, but also an egg. Then, around 4:00 p.m., And yet, there it was. But what could I do?

Mexico 246