Phenology effects in the North American Breeding Bird Survey- Results by species in pdf format

This data product provides summary information, by species, of changes in relative visibility of birds (phenology effects) through the April - July time period in which the North American Breeding Bird Survey (BBS) is conducted. Data are presented for 408 species of birds. Seasonal phenology effects are presented for selected latitudes and years, documenting changes in visibility and a variety of statistics to allow users to assess the significance of those effects. Results are presented in summarized graphical form in species-specific pdf files.

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  "010:12"
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  "geospatial"
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