Incubation takes 32-43 days. Young are able to fly after 48-59 days. Both sexes tend young. Young fed regurgitant first 10 days. Brood of 3 requires 6 pounds of fish daily.
Winters s to Chile, n Argentina.
Coastal populations now recovered aided by DDT ban and conservation programs including successful use of artificial nesting platforms. Female does most of brooding. Young hatch asynchronously. Subject to piracy by Bald Eagle, frigatebird. Only raptor whose front talons turn backward.