Why aren’t birds nests big enough for the parents

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There is a swallow’s nest outside right now with like 6 babies in it that barely fit and no room in sight for the parents. Do the parents sleep there too somehow or somewhere else?

A few years ago I saw the same with a robin’s nest and in that case, when the babies got bigger but before they could fully fly, they all moved into a nearby shrub but could only glide and hop.

Was that unusual or common to have a nest too small to hold the whole breed and parents?

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9 Answers

Anonymous 0 Comments

Adult birds usually sleep somewhere else, unless sitting on the nest to provide warmth/protection. Nest is a nursery.

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