Insectivorous bats (ours are) are known to empty humming bird feeders at
night in southern Arizona. My wife Doris tells me that on a birding trip to the
Chiricahua Mountains in southeastern Arizona, where birders were provided
with hummingbird feeders, they were cautioned to empty them at nightfall to
prevent the bats from feeding. To be sure one should stay up at night
watching the feeder. Even better have a camera with a flash. Check out the
article, url cited below.
http://www.batcon.org/batsmag/v11n2-1.html
Philip Brody |