Subjects: *BIRD surveys; *ZOOLOGICAL surveys; *CLIMATE changeGRINNEL, Joseph
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Subjects: *BANK swallow; *BIRD surveys; *BIRD conservationSWITZERLAND
Subjects: *BIRD surveys; *NORTHERN bald ibis; *CATTLE egretSWITZERLAND
Subjects: *BIRD surveys; *PLEGADIS falcinellus; *AQUATIC warblerSWITZERLAND
Subjects: *BIRD watching; *BIRD surveys; *BIRD habitatsLEHMAN, Paul
Subjects: *VIRUS identification; *BIRD surveys; *GUINEA pigsSPAIN
Subjects: *THERMOGRAPHY; *BIRD surveys; *BIRD conservationWEST Midlands (England)
Subjects: *FINCHES; *BIRD surveys; *ORANGESKIMBERLEY (W.A.); AUSTRALIA
Subjects: *ACARIFORMES; *BIRD surveys; *COUNTRY of origin (Immigrants)
Subjects: *BIRD surveys; *BIRD population measurement; *BIRD conservationSWITZERLAND