scholarly journals Advances and Environmental Conditions of Spring Migration Phenology of American White Pelicans

2017 ◽  
Vol 7 (1) ◽  
Author(s):  
D. Tommy King ◽  
Guiming Wang ◽  
Zhiqiang Yang ◽  
Justin W. Fischer
Keyword(s):  
Environmental Conditions ◽  
Spring Migration ◽  
Migration Phenology

scholarly journals Spring migration phenology and habitat use of red-winged blackbirds in eastern South Dakota

2002 ◽  
Vol 20 ◽  
Author(s):  
George, M. Linz ◽  
Amy, E. Barras ◽  
Richard, A. Sawin ◽  
H. , Jeffrey Homan ◽  
David, L. Bergman ◽  
...  
Keyword(s):  
Habitat Use ◽  
South Dakota ◽  
Spring Migration ◽  
Migration Phenology

scholarly journals Spring migration phenology and arrival conditions of the Eastern Bonelli's Warbler and the Semi-collared Flycatcher at a small Greek island

2013 ◽  
Vol 28 (1) ◽  
pp. 39-42 ◽  
Author(s):  
Christos Barboutis ◽  
Angelos Evangelidis ◽  
Triantaphyllos Akriotis ◽  
Thord Fransson
Keyword(s):  
Spring Migration ◽  
Collared Flycatcher ◽  
Migration Phenology ◽  
Greek Island

A Novel Locality for the Observation of Thousands of Passerine Birds during Spring Migration in Los Angeles County, California

Western Birds ◽  
2021 ◽  
Vol 52 (4) ◽  
pp. 322-339
Author(s):  
Ryan S. Terrill ◽  
Christine A. Dean ◽  
John Garrett ◽  
Daniel J. Maxwell ◽  
Lauren Hill ◽  
...  
Keyword(s):  
Los Angeles ◽  
Los Angeles County ◽  
Pacific Coast ◽  
Spring Migration ◽  
Passerine Birds ◽  
San Gabriel Mountains ◽  
Species Migration ◽  
The Pacific ◽  
Migration Phenology ◽  
Species Specific

Avian migration is a spectacular phenomenon, representing the annual movements of billions of birds globally. Because the greatest diversity and numbers of birds migrate at night, opportunities to observe active migration are rare. At a number of localities in North America, however, observers can quantify movements of many typically nocturnal migrants during daylight where they continue after dawn. Such locations have provided much information about species-specific phenology, status, and orientation during migration. Localities where morning flights of land birds can be observed are unevenly distributed, however, and are little reported along the Pacific coast. Here we describe a novel location for the observation of spectacular morning flights of nocturnal migrants during spring migration at Bear Divide, in the western San Gabriel Mountains, Los Angeles County, California. In two years of informal surveys at the site, we have recorded at least one morning with an estimated ~13,500 individual birds passing. Our preliminary analyses suggest that the peak of a species’ migration at Bear Divide is correlated with the latitude of a species’ breeding, being later in the spring as that latitude increases. Our data from Bear Divide provide an independent perspective on migration as quantified by local radar. Further work at this locality may help inform our knowledge of migration phenology and population trends.

scholarly journals Ontogenetic shifts from social to experiential learning drive avian migration timing

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Briana Abrahms ◽  
Claire S. Teitelbaum ◽  
Thomas Mueller ◽  
Sarah J. Converse
Keyword(s):  
Experiential Learning ◽  
Environmental Conditions ◽  
Satellite Tracking ◽  
Learning Processes ◽  
Tracking Data ◽  
Avian Migration ◽  
Migration Patterns ◽  
Migration Timing ◽  
Migration Phenology ◽  
Over Time

AbstractMigrating animals may benefit from social or experiential learning, yet whether and how these learning processes interact or change over time to produce observed migration patterns remains unexplored. Using 16 years of satellite-tracking data from 105 reintroduced whooping cranes, we reveal an interplay between social and experiential learning in migration timing. Both processes dramatically improved individuals’ abilities to dynamically adjust their timing to track environmental conditions along the migration path. However, results revealed an ontogenetic shift in the dominant learning process, whereby subadult birds relied on social information, while mature birds primarily relied on experiential information. These results indicate that the adjustment of migration phenology in response to the environment is a learned skill that depends on both social context and individual age. Assessing how animals successfully learn to time migrations as environmental conditions change is critical for understanding intraspecific differences in migration patterns and for anticipating responses to global change.

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