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Every sperm is sacred

10,000 Birds

That’s the finding of researchers from the University of Sheffield in the UK, published in Proceedings of the Royal Society B. (If 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”.)

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Birding Shanghai in October 2022

10,000 Birds

Though admittedly, I only show this photo to quote the line of a Gary Larson cartoon : “The Bluebird of Happiness long absent from his life, Ned is visited by the Chicken of Depression.” And for the last time this year: the Blue-and-white Flycatcher. And yes, sparrows in areas with polluted air are less healthy.

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