Date: 09/27/2015

Number: 70

Overnight roosting area with 50-70 specimens. They usually return to same location year after year, although it's been pretty sparse the past 4 or 5 years. I expect the numbers to increase in the next few days.

First roost observation was 4pm, Sept 27. Roost formation was sometime during the week prior.
Nectar source unknown, only thing blooming now is thistle and broomweed.
Overnight temps are mid 60s.
Wind direction southerly. This location is absolutely prime for wind protection. It's behind a farm pond spillway, protected on two sides by rolling hills, and tree rows. I think this is the main reason they return to this locale year after year.

Wife and I went back this evening (10/01), probably 200-300 in the immediate area.
https://www.youtube.com/watch?v=YeopBv2CUvw

Mangum, OK

Latitude: 34.8 Longitude: -99.6

Observed by: Gerry
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