Journal of Mammalogy 
Published Quarterly by the American Society of Mammalogists 
VoL. 2 MAY, 1921 No. 2 
BANDING BATS 
By a. a. Allen, Ph.D. 
[Plates 4-5] 
The interesting article by Mr. A. B. Howell on “Some California 
Experiences with Bat Roosts’^ in the August number (1920) of the 
Journal inspires me to put on record a few observations that I have 
made on the bats in central New York, and a recent attempt that I 
have been making to mark individual bats with the aluminum bands 
of the American Bird Banding Association. 
Seven species of bats are known to occur at Ithaca, New York, five 
of which are common and widespread. The hoary bat, Nycteris 
cinerea, is known only as a migratory species from a few specimens 
taken during October, and the Say^s bat, Myotis suhulatus, has been 
found but twice, July 2, 1904, and June 11, 1914. Of the others, the 
large brown bat, Eptesicus fuscus, and the small brown bat, Myotis 
lucifugus, are abundant about buildings, the latter being the more 
common. The other three, Nycteris borealis, the red bat, Lasionycteris 
noctivagans, the silvery-haired bat, and Pipistrellus subflavus, the pipi- 
strelle bat, usually roost about trees or in crannies in the rocky sides of 
the gorges. The pipistrelles, however, frequently assemble in dark 
corners of buildings along the edges of the ravines. 
The onlj^ ones I have found roosting in colonies are the little brown 
and the pipistrelle, the former occurring during the breeding season in 
colonies often of several hundreds, in dark attics, cupolas, etc., while 
the latter usually roost in small clusters. The accompanying photo- 
graph shows a cluster of 18, the largest I have seen. 
On June 24, 1916, a neighbor, Mrs. Willard Austen, living close to 
Fall Creek gorge, informed me that some bats had been roosting in a 
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JOURNAL OF MAMMALOGY, VOL. 2 , NO. 2 
