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When will I leave? "Decision making and trade-offs in relation to timing of spring migration of male Bar-tailed Godwits (Limosa lapponica) at a stopover site"

Albers, H. (2010) When will I leave? "Decision making and trade-offs in relation to timing of spring migration of male Bar-tailed Godwits (Limosa lapponica) at a stopover site". Bachelor's Thesis, Biology.

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Abstract

Male Bar-tailed Godwits of the Afrosiberian population (L. lapponica taymirensis) use the Wadden Sea as a stopover site from migration where they replenish their fuel load and molt further into breeding plumage. In this thesis triggers influencing timing of males are explored in the light of decision making and trade-offs. An interaction between fuel load and molt exists. Wind has to be studied in the future and plays thus far no role in timing. There are more males in this species and it is suggested that males depart earlier. Proximate factors that underlie timing of male birds, obtaining a territory and growing a fresh feather pack in order to gain a female, could certainly play a role in Bar-tailed Godwits. Decisions are made by use of an interplay of several ultimate factors (weight and molt) sustained by proximate factors (competition for a mate, a tight migration scheme). Since an interaction between several factors exists, future research is difficult, interesting and necessary to unravel this.

Item Type: Thesis (Bachelor's Thesis)
Degree programme: Biology
Thesis type: Bachelor's Thesis
Language: English
Date Deposited: 15 Feb 2018 07:44
Last Modified: 15 Feb 2018 07:44
URI: http://fse.studenttheses.ub.rug.nl/id/eprint/9332

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