Breeding Season Map |
The Breeding Season Map is Based on Average Counts from The North American Breeding Bird Survey, 1982 - 1996) |
Winter Season Map |
The Winter Season Map is Based on Average Counts from The Audubon Christmas Bird Count Analysis 1959 - 1988) |
Patuxent Wildlife Research CenterLast updated 4/23/97
12500 Beech Forest Road
Laurel, Maryland 20708-4039 USA
Telephone: 301-497-5662 Fax: 301-497-5666