Comparison of visual bird migration counts with radar estimates

Ibis ◽  
2017 ◽  
Vol 159 (3) ◽  
pp. 491-497 ◽  
Author(s):  
Matthias Schmidt ◽  
Janine Aschwanden ◽  
Felix Liechti ◽  
Gábor Wichmann ◽  
Erwin Nemeth
Keyword(s):  
Bird Migration

A bibliography for John Bachman

2005 ◽  
Vol 32 (1) ◽  
pp. 47-63
Author(s):  
G. Waddell
Keyword(s):  
North America ◽  
Natural History ◽  
Bird Migration ◽  
Wild Plants ◽  
Human Race ◽  
John James Audubon ◽  
The Reformation

John Bachman (1790–1874) was co-author with John James Audubon of The viviparous quadrupeds of North America (1842–1848). His other major books were The doctrine of the unity of the human race examined on the principles of science (1850) and A defense of Luther and the Reformation (1853). He wrote approximately 70 articles on topics ranging from religion to natural history including scientifi c methodology, wild plants, variation in domesticated plants and animals, hybrids, agriculture, bird migration and animal markings.

scholarly journals Advancement in long-distance bird migration through individual plasticity in departure

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Jesse R. Conklin ◽  
Simeon Lisovski ◽  
Phil F. Battley
Keyword(s):  
Bird Migration ◽  
Population Level ◽  
Breeding Site ◽  
Environmental Constraints ◽  
Adaptive Responses ◽  
Long Distance ◽  
Direct Observations ◽  
Breeding Resources ◽  
Plastic Responses

AbstractGlobally, bird migration is occurring earlier in the year, consistent with climate-related changes in breeding resources. Although often attributed to phenotypic plasticity, there is no clear demonstration of long-term population advancement in avian migration through individual plasticity. Using direct observations of bar-tailed godwits (Limosa lapponica) departing New Zealand on a 16,000-km journey to Alaska, we show that migration advanced by six days during 2008–2020, and that within-individual advancement was sufficient to explain this population-level change. However, in individuals tracked for the entire migration (50 total tracks of 36 individuals), earlier departure did not lead to earlier arrival or breeding in Alaska, due to prolonged stopovers in Asia. Moreover, changes in breeding-site phenology varied across Alaska, but were not reflected in within-population differences in advancement of migratory departure. We demonstrate that plastic responses can drive population-level changes in timing of long-distance migration, but also that behavioral and environmental constraints en route may yet limit adaptive responses to global change.

scholarly journals Autumnal Bird Migration over the Windward Caribbean Islands

The Auk ◽  
1985 ◽  
Vol 102 (1) ◽  
pp. 163-167 ◽  
Author(s):  
Timothy C. Williams
Keyword(s):  
Bird Migration ◽  
Caribbean Islands

scholarly journals Consistency in long-distance bird migration: contrasting patterns in time and space for two raptors

2016 ◽  
Vol 113 ◽  
pp. 177-187 ◽  
Author(s):  
Yannis Vardanis ◽  
Jan-Åke Nilsson ◽  
Raymond H.G. Klaassen ◽  
Roine Strandberg ◽  
Thomas Alerstam
Keyword(s):  
Bird Migration ◽  
Time And Space ◽  
Long Distance

An empirical comparison of models for the phenology of bird migration

2016 ◽  
Vol 48 (2) ◽  
pp. 255-265 ◽  
Author(s):  
Andreas Lindén ◽  
Kalle Meller ◽  
Jonas Knape
Keyword(s):  
Bird Migration ◽  
Empirical Comparison
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