40 year old eagles produce 16th chick

A pair of bald eagles at the Winnipeg Zoo, likely in their 40s, have had their 16th chick.

“The significance is not only that the birds have reached this advanced age—probably into their 40s—but the fact that they're still reproducing, and I can’t find any record of either wild or captive birds ever successfully raising chicks at this advanced age,” said Dr. Bob Wrigley, zoo curator.

The new enclosure didn't have a nest box, since staff figured the eagles were past their breeding days.

But the birds surprised staff by building a ground nest from straw bales and laying an egg, something eagles normally only do on the tundra.