The Arctic is still wintry when male Snow Buntings return to nesting areas in April. There's a big benefit to arriving early enough to claim a prime nest cavity in a rock face or under boulders, where it will be safer from predators. Nesting in chilly rock cavities means extra care must be taken to keep eggs and nestlings warm. That’s why, unlike many other bird species, female Snow Buntings never come off the nest. The males bring them food, giving them more continuous time on the eggs.

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