URN:catalog:ICE:TRBL:add

Observer: 
George Chaniot
Observation Date: 
2011-04-17
Best Estimate for Number of Birds Observed: 
250
Minimum Estimate for Number of Birds Observed: 
179
Maximum Estimate for Number of Birds Observed: 
350
Type of Estimate: 
Visual and Untimed
Precision of Estimate: 
Precise Count
Minutes spent at observation site: 
61
Singing: 
Yes
Carrying Nest Material: 
Yes
Colony quiet, Incubation inferred: 
No
Adults Carrying Food: 
No
Fledglings out of Nest: 
No
Distance to Water: 
water adjacent
Area Estimate (square meters): 
42

Sex ratio: 22mm:8ff
Due to spraying and clearing of blackberries the colony is now in two sections. The west section has about 2/3 of the birds Counts of sex ratio consistently about 4:1. Stream of foraging birds leaving to ESE, others returning from vineyards to SW.