Has the Resident Pair Been Displaced by Youth?

Debbie Becker leads a free bird walk at the Garden every Saturday from 11 a.m. to 12:30 p.m., beginning at the Reflecting Pool in the Leon Levy Visitor Center.

Now that the trees are shedding their leaves, I’ve begun taking the weekly Bird Walk group through the Forest in hopes of seeing the resident great horned owls. Sure enough, a couple of weeks ago we discovered a large great horned owl (GHO) perched on a low branch.

At first we could not decided whether it was the adult male or the adult female of the regular pair. (The male is at left in the photo, taken last year during their courting phase.) Upon closer inspection we decided it was neither; it was one of their offspring. It has been months since the babies fledged the nest. So what was this immature owl still doing in the Forest? Great horned owls reach sexual maturity after two years, but their territoriality begins almost immediately after they learn to feed themselves.

Could it be that the mature male has reached the end of his reign as the only male owl in the Forest? He is, after all, more than 20 years old. That is a long life span for a wild owl (captive GHOs can live up to 30 years), although the owl pairs in Pelham Bay Park and Van Cortlandt Park have been breeding for almost the same amount of time. Human encroachment has given them a unique domain: The highways and complexes around our forests have created a closed habitat, ensuring enough food, safety from many predators, and a long life span.

The time comes for all creatures when they get too old to go on or they are pushed out by the next generation. Observing the younger owl in the Forest saddened me and the birders on the tour, as we know it could only mean one thing: Our resident great horned owls may be pushed out by a more vibrant male that will take over the Garden’s Forest and begin looking for his own mate. It is a somber time for the resident birders. We are all getting older and in danger of being replaced by someone fresher and younger. Sadly, to everything there is a season, even for the great horned owls of The New York Botanical Garden.

Join us on Saturdays at 11 a.m. to look for the great horned owls and other birds of the Garden.

Learn more about the Garden’s resident great horned owls after the jump. read more »