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Adjustment to an advancement of spring by migratory birds: four possible solutions.

Eerkens, M. (2012) Adjustment to an advancement of spring by migratory birds: four possible solutions. Bachelor's Thesis, Biology.

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Abstract

Abstract: This review will look at the empirical evidence for each of four solutions migratory birds have to adjust to the advancement of spring. The four solutions are: (1) increased migration speed, (2) advanced departure from the wintering areas, (3) northward shift of the wintering areas and (4) prolonged northward spring migration. Empirical evidence was found for the first three of the solutions, but not for a prolonged northward spring migration. The effectiveness of the solutions and the type of solution however, varied greatly between species, populations and geographical areas. This review also shows that there are constraints for each solution. Due to a lack of data en route and from the wintering areas, it not possible to fully understand the mechanisms behind these changes, phenotypic or evolutionary response, and to say which solutions are likely to be better, or if perhaps all are needed. So a lot more research on en route conditions and wintering areas needs to be done, to make future predictions of the adjustment of migratory birds to the advancement of spring.

Item Type: Thesis (Bachelor's Thesis)
Degree programme: Biology
Thesis type: Bachelor's Thesis
Language: English
Date Deposited: 15 Feb 2018 07:50
Last Modified: 15 Feb 2018 07:50
URI: http://fse.studenttheses.ub.rug.nl/id/eprint/10391

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