URN:catalog:ICE:TRBL:add

Observer: 
George Chaniot
Observation Date: 
2011-04-16
Best Estimate for Number of Birds Observed: 
5
Minimum Estimate for Number of Birds Observed: 
8
Maximum Estimate for Number of Birds Observed: 
11
Type of Estimate: 
Visual and Untimed
Precision of Estimate: 
Precise Count
Minutes spent at observation site: 
21
Singing: 
Yes
Carrying Nest Material: 
No
Colony quiet, Incubation inferred: 
No
Adults Carrying Food: 
No
Fledglings out of Nest: 
No
Distance to Water: 
water adjacent
Area Estimate (square meters): 
164

Two males singing in top of an oak adjacent to the blackberries where they nested previously. Three females near, but not in, the blackberries. Another male singing in a flock of mixed blackbirds about 200 yards to the north. Two more males foraging with mixed blackbirds in vineyard 200 yards away.
This is the first tricolored interest in this area since it was sprayed with roundup some years ago. Regrowth is beginning.
Sex Ratio: 2 mm : 3 ff at colony site
5 mm : 3 ff including others nearby