Birds in the box (IMAGE)

Netherlands Institute of Ecology (NIOO-KNAW)

Birds in the box

Caption

Four key phases inside the nest box: laying eggs (top left), two days after the eggs are hatched (top right), a week after they are hatched (bottom left) and two weeks later - when the young are about to leave the nest.

Credit

Melanie Lindner/NIOO-KNAW

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