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North American Breeding Bird Survey  
Training: BBS Methodology - Point Counts [page 19/34]
Conducting a BBS Point Count (continued)
  • Count all birds seen within 0.25-mile (400 m) radius except dependent young, including downy young of water and shorebirds.
  • Flocks too large to be counted during the 3-min time period may be estimated.
  • Count all birds heard regardless of suspected distance, unless recorded at a previous stop.
count all birds seen within .25 miledo not count dependent youngestimate large flocks
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