Subjects: BIRD populations; BIRD surveys; BIRD migrationNORTH America
Record details
Subjects: BIRD surveys; BIRD populations; ZOOGEOGRAPHY
Subjects: BIRD surveys; ORNITHOLOGISTS; COMMONWEALTH Scientific & Industrial Research Organization (Australia)
Subjects: *Ecological surveys; *Islands; Bird surveysAmchitka Island (Alaska); Islands of the Pacific; North America
Subjects: BARRED owl; BIOACOUSTICS; SPOTTED owl
Subjects: BIRD populations; BIRD surveys; VALIELA, IvanNORTH America
Subjects: *COMMON nighthawk; *BIRD surveys; *SPECIES distribution
Subjects: *BIRDS; *BIRD surveys; *SPECIES
Subjects: SPECIES diversity; BIRD populations; BIRD surveys
Subjects: *BIRD surveys; *BIRD breeding; *LAND cover