North American Migration Count
Paynter J. North American Migration Count
In one day all birds seen or heard are recorded by species and count while birdwatching (walking, driving, etc) along with number of participants and miles surveyed.
Paynter J. North American Migration Count
In one day all birds seen or heard are recorded by species and count while birdwatching (walking, driving, etc) along with number of participants and miles surveyed.