Giving A Hoot: Looking for Eastern Screech-Owls at The Garden
Posted in Wildlife on January 25 2011, by Plant Talk
| Chris Nagy is a Ph.D. student at CUNY, and a wildlife biologist at the Mianus River Gorge Preserve in Bedford, N.Y. |
In December I had the opportunity to survey The New York Botanical Garden for Eastern Screech-Owls. I have been chasing Eastern Screech-Owls in the Bronx and Manhattan for nearly 7 years, as part of my Ph.D. research, and getting the chance to look for them in the Garden was a treat.
The easiest way to look for owls, if you’re willing to wander through the woods at night, is to play recordings of their vocalizations. Most owls communicate primarily through calls, and if there’s an owl nearby, it will probably call back when it hears your broadcast.
There have been no reports of Screech-Owls at the Garden for many years, and we didn’t find any this time either. (Ed. note – Though we have no Eastern Screech-Owls, the Garden is home to at least one Northern Saw-Whet Owl and a family of Great Horned Owls). But determining the places where owls are not is just as important as finding where they are.
By comparing the geographic location, habitat characteristics, and other variables in places where they are found versus where they are not, we can determine what features are important for a species. My hunch is that the absence of Eastern Screech-Owls at the Botanical Garden has more to do with the Garden’s location within the larger city than with any specific habitat quality. Alternatively, there also may be larger raptors at the Garden discouraging the smaller Screech Owls from readily calling back, or from making the Garden their home at all.
I’d like to thank NYBG staff, especially Jessica Arcate Schuler, for their help and allowing me to perform some of my research at the Garden.
