MIGRATION AND DISPERSAL OF LAUGHING GULLS IN THE UNITED STATES

作者: Jerrold L. Belant , Richard A. Dolbeer

DOI:

关键词: West coastArchaeologyLarus atricillaBiological dispersalGeographyEcologyLarusFish <Actinopterygii>

摘要: --The 3662 recovery records for Laughing Gulls (Larus atriczlla) banded in North America from 1924 to 1991 were analyzed determine migration and dispersal patterns Northeast (Maine Virginia) Gulf Coast (west coast of Florida Texas) populations. Autumn was initiated October. migrated greater distances recovered farther south during winter than gulls. Significantly more wintered along the did Gulls. In contrast, significantly Central South America. Adult returned breeding areas between March May. Sixty-four percent adult recoveries subsequent seasons within 50 km their natal banding locations. north location seasons. hatching-year characterized by northward movements before migration. There little interchange MIGRACI(•N Y PATRONES DE DISPERSI(•N INDIVIDUOS LARUS ATRICILLA EN LOS ESTADOS UNIDOS Sinopsis.--E1 recobro de individuos Larus atrzczlla anillados en Norte Am6rica entre y rue analizado para determinar la migracion patrones dispersi6n las poblaciones del noreste a costa golfo (costa oeste basra Texas). La migraci6n oto•al poblaci0n se inici6 octubre. Los esta poblaci6n migraron distancias mils largas recobraron al sur durante el invierno que aves golfo. E1 nfimero gayiotas pasaron costas mismo significativamente mayor noreste. En contraste, un Centro Sur Am6rica. Las adultas regresaron alas fireas reproducci6n marzo mayo. 64% los adultos recobrados 6pocas reproductivas subsiguientes fueron encontrados dentro radio unos su lugar natal. recuperadas subsiguientes, norte nacimiento sur. otofial primer a•o, caracteriz6 por movimientos hacia previo migraci6n. Se encontr6 poco intercambio Numerous studies band have been conducted document Herring argez•tatus; e.g., Dexter 1978, Ludwig 1963, Threlfall Weseloh 1984) Ring-billed (L. clelazvarez•sis; Forsythe 1972a; 1943; Southern 1967, 1974). is less detailed information available, however, regarding • Current address: Great Lakes Indian Fish Wildlife Commission, 1908• West Superior Street, Duluth, Minnesota 55806 USA.

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