Why birds have different clutch sizes
The success of individual birds is measured by their contribution to the gene pool determined by the number of surviving offspring they produce. To determine the rate of offspring production, population biologists study fecundity — the number of eggs per nest (clutch size) and nests per year (broods).
https://www.birdwatchingdaily.com/news/science/why-birds-have-different-clutch-sizes/
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