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Revenge Birding (Shanghai, early June 2022)

10,000 Birds

. … Nest dismantling by the Hair-crested Drongo may be an adaptive behavior to increase fitness by reducing risk of future predation and competition for nest sites in the following breeding season” ( source ). In Singapore, a Tiger Shrike was observed casting a pellet after eating a large scarab beetle. ” ( source ).

Singapore 147
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The Pittas of Sepilok

10,000 Birds

One study found that there seems to be some work sharing among the breeding adults – the male had a higher visitation rate of the nest while the female was the only one that brooded. If Adam Smith had known this, he would have pointed out that his pin factory example more or less has the same rationale behind it.

Ghana 130