Internal and external transport of algae and protozoa by sea gulls.
D000818:Animals; D001502:Beak / Q000382:microbiology; D001717:Birds; D003106:Colon / Q000382:microbiology; D004947:Esophagus / Q000382:microbiology; D056890:Eukaryota / Q000254:growth & development / Q000302:isolation & purification*; D005241:Feathers / Q000382:microbiology; D009657:North Carolina; D013781:Texas