This research was partially supported with funding from Ministero dell’Istruzione dell’Universita`e della Ricerca,PRIN 2003053710_005;Throughout the 22 years,ringing permits were released every other year by the competent Italian authority(Istituto Superiore per la Protezione e la Ricerca Ambientale,Bologna).
The increase in the average air temperature due to global warming has produced an early onset of the reproduction in many migratory birds of the Paleartic region.According to the“mismatch hypothesis”this response ca...
Theory predicts that because males are more variable in reproductive success than females, a mother should produce more sons to maximize fitness return from the sex allocation if she is of high-quality (the female qu...