URN:catalog:ICE:TRBL:6022

Observer: 
John Fulton
Location: 
Basalt Road
Observation Date: 
2012-04-21
Best Estimate for Number of Birds Observed: 
5000
Minimum Estimate for Number of Birds Observed: 
3500
Maximum Estimate for Number of Birds Observed: 
8000
Type of Estimate: 
Visual and Untimed
Precision of Estimate: 
Scanning Blocks
Minutes spent at observation site: 
10
Singing: 
Yes
Adults Carrying Food: 
No
Fledglings out of Nest: 
No

Colony seems to be spreading north, down the drainage towards some Baccharis and willow creating a colony shaped like the lower case letter "i" with the notrthwest end of the colony (dot) at lattitude 37.041459N degrees and longitude 121.064765 degrees W.
The bottom of the southeast corner of the base of the "i" shaped colony is at latitude 37.033629 degrees N, and longitude 121.063328 degrees W.
Nesting vegetation is milk thistle and nettle. Birds are flying for foraging towards the the sse, and drinking flights are heading to the ssw to get water on the edge of the reservoir at the dam.