SEEN - SE European Bird Migration Network
What does the ringer need a ruler for?
Krzysztof Stępniewski and Jarosław K. Nowakowski
Bird Migration Research Station, University of Gdańsk, al. Marszałka Józefa Piłsudskiego 46, 81-378 Gdynia, Poland
e-mail: majkong@op.pl

Wing morphology, especially its length and shape, is strongly dependent on the migration strategy of birds. Long-distance migrants have longer and more pointed wings, whereas wings of sedentary species are shorter and more rounded. While migration strategies evolve under the pressure of various environmental factors, morphology of flight apparatus is balanced to meet needs of migratory distance as well as everyday routine of life at breeding grounds. Hence, studying long-term changes of birds’ measurements may help us better understand the evolutionary adaptations to recent climate changes. In this presentation the results of several studies on wing morphology and long-term changes of birds’ biometry are presented and discussed.
Created by Pronetix 2006