---------------------- Forwarded Message: --------------------- From: "Robert DeCandido, PhD" <rdcny@xxxxxxxxxxxxx> To: BIRDCHAT@xxxxxxxxxxxxxxxxxxxx Subject: [BIRDCHAT] Request for Info: Washington Monument (in D.C.) Date: Mon, 14 Nov 2005 18:34:31 +0000
Briefly, in the 1930s, when the upward-directed lights were first(?) pointed at the monument at night, large numbers (100-300) birds would collide with the structure on certain nights each year, usually between mid-Sept. and mid.-Oct. (Note that such collisions also occurred BEFORE the lights were turned on at night on the Monument in the 1920s... However, I can find no hard numbers for that era.) Few (if any) collisions occurred during spring migration back then, and that is still true today.
Here in NYC at the Empire State Building (ESB), big kill nights occurred between the 1930s and 1970s, on average about once every seven to twelve years. I am not aware of any that have occurred since 1980, though would be interested to know if someone has other info. In 2004-05, I have monitored the fall migration each night from early August through mid-November at the ESB. I have found three dead birds on the Observation Deck during this time.
Thanks. Feel free to email directly or post to this list,
-- Susan A. Heath George Mason University Environmental Science Department Fairfax, VA
Secretary, Virginia Avian Records Committee Keeper, Virginia Comp List at www.virginiabirding.org
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