We expect to see red-tailed hawks soaring over open country, or perched on a freeway light tower, searching for the rodents that make up much of their diet.
Where we don't expect to see a red-tailed hawk is in a bald eagle's nest. And yet that's exactly the situation in one nest this summer in Door County, Wis.
Linda Rappel, an avid bird photographer, was keeping an eye on an eagle nest when one June day she noticed a much-smaller raptor standing beside two large eagle youngsters. It was a young red-tailed hawk in the nest, and later that day the hawk was perched beside an adult eagle on a branch.
Luckily, she took photos to document this rare happenstance and sent them to me. When I opened up her photo file, I was astonished: What was a red-tailed hawk doing in an eagle nest, and why hadn't the eagles treated the smaller raptor like prey, something to feed their eaglets?
Some internet searching turned up an article about a red-tailed hawk reared by bald eagles in British Columbia in 2018. The experts in the article leaned toward the theory that an eagle parent had raided a red-tailed hawk nest and seized a hawk chick to feed to its own youngsters. But the young hawk somehow evaded being eaten and was instead reared by the eagles.
There have been a few other observations of eagles raising a red-tailed hawk in Western states, so it's not entirely unheard of. I really wanted some answers for this unusual case, so I contacted local experts who know their eagles.
John Moriarty, a wildlife manager for Three Rivers Park District and an eagle watcher for many years, speculated:
"My guess, and it's totally a guess, is that a hawk egg was laid in the eagle nest at the same time that the eagle was laying eggs," noting that this occurs in some other species, like ducks and game birds.