URN:catalog:ICE:TRBL:add

Observer: 
John Irwin
Observation Date: 
2011-04-16
Best Estimate for Number of Birds Observed: 
2500
Minimum Estimate for Number of Birds Observed: 
1300
Maximum Estimate for Number of Birds Observed: 
5000
Type of Estimate: 
Visual and Untimed
Precision of Estimate: 
Unknown
Minutes spent at observation site: 
30

This morning, 500+ foraging flock observed near / returning to colony site. Virtually all were males, and another 100+ birds visible at nest. This afternoon, two foraging flocks totaling 1000+ birds observed returning to nest. Another 300 birds visible at colony site and nearby foraging. Again, predominantly if not all male birds. Visible count was at least 1300 birds, MALE, with unknown number of female birds at colony site. Therefore, count submitted is at least 2500 birds, and could easily be 5000 tricolors, if only half the colony males were foraging.