"This pair is doing a nest exchange," explains Eva. Female #46-07 DAR is on the nest, about to sit down. Her mate, #402, is feeding. Both parents help incubate the eggs, which take a month to hatch. Every 15-20 minutes or so, they also do egg rolls, using their beaks to turn the eggs over. Nest exchange times vary, but from what I have seen, are conducted every couple hours or so."

Image: Eva Szyszkoski, ICF

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