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Sentient: a book review

10,000 Birds

The subtitle of Jackie Higgins’ book Sentient: How Animals Illuminate the Wonder of Our Human Senses , aptly sets forth her thesis – though the “wonder” it refers to could equally well be used to describe animal (not just human) senses, as she shows in fascinating detail.

Humane 231
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Every sperm is sacred

10,000 Birds

Because unlike those of mammals, avian ova need penetration by multiple sperm in order to successfully develop into baby birds. That’s the finding of researchers from the University of Sheffield in the UK, published in Proceedings of the Royal Society B. (If … especially if you’re a lady bird in heat.

Zebras 145
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Birding Yancheng, Jiangsu

10,000 Birds

According to Wikipedia, these birds are good at multitasking, being “in some parts of its range … known as a symbol of luck, longevity, and fidelity” As in humans, “the social implications of dancing [among the cranes] are complex in meaning” ( source ). If everybody did this, the result would be chaos.

Birds 195
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Great Tit Telomeres, Baby Talk, Brainy Birds

10,000 Birds

Third, which we already suspected, bird brains are adjusted to provide extra smartness in a way not seen in mammals. In humans, adults (probably mainly mothers) do this thing called “motherese” which is talking in a way one would normally not talk to another adult, to a baby. City Great Tit ( Parus major ) telomeres shortened.

Mammals 108
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Birding Sepilok, Borneo (Part 2)

10,000 Birds

Fortunately for the honor of the species, the researchers found that kleptoparasitism was practiced at a low rate (4% of observations) while much more often, drongos captured insects disturbed by other species (41% of observations). In the unloved “Other” section of today’s post, we have a few more mammals.

Sri Lanka 205
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Just like in people, yawning is contagious in birds

10,000 Birds

Science is fairly well established that yawning can spread like wildfire among groups of humans, as well as a few other mammals. New research suggests that the phenomenon of contagious yawning can also be seen in birds. (Our first victim appears to be the Ring-billed Gull above, photographed by Corey.)

New York 157
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Flock to Marion

10,000 Birds

These two islands are about halfway between the tip of South Africa and Antarctica in the Subantarctic Indian Ocean, have had relatively few human visitors, and are primarily inhabited with some of the rarest seabirds in the world and a smaller number of mammals. Which makes it a haven for seabirds….and and seabirders.