Pre-fledging survival in a Yellow-legged Gull Larus michahellis population in northern Iberia is mostly determined by hatching date

摘要: ABSTRACTCapsule: Pre-fledging survival in a Yellow-legged Gull Larus michahellis population northern Iberia is negatively correlated to hatching date.Aims: To explore which factors have more importance determining the pre-fledging daily rates from Iberia. Specifically, we tested for effect of date and order, body size condition meteorological conditions on survival.Methods: Cormack–Jolly–Seber models with mixtures were used model rates.Results: Daily mostly affected by date.Conclusions: Hatching was most important factor affecting chicks during period colony