URN:catalog:ICE:TRBL:926

Observer: 
Lara Sparks
Observation Date: 
2008-04-25
Best Estimate for Number of Birds Observed: 
33000
Minimum Estimate for Number of Birds Observed: 
25000
Maximum Estimate for Number of Birds Observed: 
40000
Type of Estimate: 
Visual and Untimed
Precision of Estimate: 
Scanning Blocks
Minutes spent at observation site: 
12
Singing: 
No
Carrying Nest Material: 
Yes
Colony quiet, Incubation inferred: 
Yes
Adults Carrying Food: 
Yes
Fledglings out of Nest: 
No
Distance to Stored Grains: 
greater than 500 meters
Distance to Water: 
over water
Area Estimate (square meters): 
6383

Distance to colony and heavy traffic made it hard to hear the birds. It was also difficult to determine how deep/wide the colony might be.