Increased lifetime reproductive success of first‐hatched siblings in Common Kestrels Falco tinnunculus

摘要: Order of birth has profound consequences on offspring across taxa during development and can have effects individuals later in life. In birds, differential maternal allocation investment their progeny lead to variance the environmental conditions that experience growth within brood. particular, laying hatching order been proposed influence individual quality growing period, but little is known about fitness these two factors from a lifetime perspective. We explored effect post-fledgling survival (measured as recruitment probability) reproductive success (LRS) Common Kestrels Falco tinnunculus, using long-term individual-based data set. First-hatched chicks showed higher probability LRS than siblings. This was not due body condition at adulthood, mates or outcome compared later-hatched individuals. Instead, first-hatched had probability. could be explained by attained end nesting perhaps an enhanced competitive advantage for food over siblings time hatching. Laying order, contrast appeared no LRS. Our results suggest predicts fitness, better early-life experienced improve first then recruitment, resulting LRS. This article protected copyright. All rights reserved.