Article in journal

Report number 139 from Kvismare Bird Observatory:

Does song reflect age and viability? A comparison between two populations of the great reed warbler Acrocephalus arundinaceus.

Forstmeier W, Hasselquist D, Bensch S & Leisler B.

Published 2006 in Behavioural Ecology & Sociobiology , volume 59, pp. 634-643.