Migratory Birds of the Great Lakes University of Wisconsin Sea Grant Institute
 about habitat birds + science 20 birds
aerialist raptors
copyright UW Sea Grant, writer: L. Wiland, design: T. Yao contact us credits

Osprey — Nest and Eggs, page 2

Ospreys usually lay three eggs, creamy white to pinkish brown in color with reddish brown spots circling the larger end. The female incubates the eggs for 32-40 days. The eggs do not hatch all at once, but instead the first chick hatches out up to five days before the last one. The older chick dominates its younger siblings, and can hoard the food brought by the parents. If food is abundant, little aggression is seen among chicks, but if food is limited, the younger chicks can starve. Chicks fledge from eight to 10 weeks after hatching.