10,000 Birds

OCTOBER 28, 2015

Because unlike those of mammals, avian ova need penetration by multiple sperm in order to successfully develop into baby birds. By studying Zebra Finches and domestic chickens, the scientists discovered that multiple sperm appear necessary for a fertilized egg to progress to the embryo stage (a process called “polyspermy”.)

Zebras 145

Zebras Pythons Mammals Eggs 145

10,000 Birds

NOVEMBER 13, 2023

Even to the author of the paper, who cautiously adds that “nest architecture is unlikely to be irrelevant to females, and its role deserves further investigation” (if swear words were allowed on 10,000 Birds, I would say that he is trying to cover his ass).

Birds 204

Birds Sri Lanka Taiwan Species 204

10,000 Birds

JUNE 21, 2016

Third, which we already suspected, bird brains are adjusted to provide extra smartness in a way not seen in mammals. In this study, published in the journal Proceedings of the National Academy of Sciences, a group of juvenile zebra finches was allowed to interact with an adult. City Great Tit ( Parus major ) telomeres shortened.

Mammals 108

Mammals Zebras Birds Primates 108