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Feral Cats Are An Invasive Species in North America (and elsewhere)

10,000 Birds

Also, feral Cats on islands seem to be a serious problem, causing the extirpation of some indigenous species. A hungry feral Cat in Minnesota goes and finds new prey in an area it previously had not explored, leaving the last few of one or another bird species alone for a while. billion mammals annually. billion birds and 6.9–20.7

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Birding Shanghai in December 2022

10,000 Birds

This is a rather photographer-friendly species, staying on the same branch for quite a while and even returning to it after catching some insects – you can see this on video here and here. While the source does not say so directly, it hints that this means the species is not as intelligent as Eurasian Magpies (which pass the test).

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15 Australian Birds (Episode 6)

10,000 Birds

” Funny how the difficulty of breeding a species can be illustrated in simple monetary terms. But that may have helped me to see them – the species is quite nomadic and settles wherever there is rain. Ok, back to the (presumably non-sacred, certainly non-mummified) Australian species. In a paper published in 1938 (!),

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The Cattle Egret Expansion

10,000 Birds

When you think of invasives, you think of the birds that have been helped by human beings to get where they are, such as House Sparrow or European Starling. Other species have certainly expanded their ranges, but never in such a rapid and global scale. Cattle Egret has been introduced by humans to Hawaii and the Seychelles.

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Africa’s Big Five and Little Five

10,000 Birds

Africa is famous for its large, charismatic mammals, and the Big Five epitomize the most sought-after of these fantastic beasts. As visitors’ and the public’s interests expanded from the Big Five, and an appreciation for lesser mammals, birds and smaller wildlife has became more widespread, the term Little Five was coined.

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On the Keeping of Endangered Fishes

Animal Person

An Animal Person reader wrote me with the following question: There are many species of cichlids in Lake Victoria that are on the verge of extinction, and most are hardy and small enough to be kept in an aquarium. The analogy to mammals we rescue is interesting; it's a good point. I intend to stick with rescuing rabbits from now on.)

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I and the Bird: What is a Vulture?

10,000 Birds

The smellier the better, particularly as, unusually for birds, many species can boast a robust sense of smell. That bald head, so odd and homely, is actually an adaptation for sticking one’s head deep inside the gut of a deceased mammal. Vultures famously feed on carrion. Dead things. Griffon Vulture , photo by Alan Tilmouth.