Birding Shanghai in May 2023 – Part 2
10,000 Birds
JUNE 8, 2023
One study in Korea found that 37% of injuries and deaths were caused by predation by natural enemies, another 37% (a worryingly high number) by window strikes, 10% by traffic accidents, 7% each by flooding and dehydration, and 3% by human disturbance. I wonder what Barn Swallows did before humans started building houses.
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