La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	Age- and Condition-dependent Mortality of Common Tern (Sterna hirundo) Chicks During a Heavy Rainfall Event (2018)
Auteurs :	Kamila Gach, Auteur ; Tomasz Janiszewski, Auteur ; Radoslaw Wlodarczyk, Auteur ; Bartosz Lesner, Auteur ; Piotr Minias, Auteur
Type de document :	Article
Dans :	Waterbirds (41(1) March, 2018)
Article en page(s) :	63-67
Résumé :	The aim of this study was to evaluate which factors determined immediate mortality of Common Tern (Sterna hirundo) chicks during a heavy rainfall. On 26 June 2013, a heavy rainfall event was recorded at an inland colony of Common Terns in central Poland that resulted in the death of similar to 30% of the chicks. The highest mortality rate was recorded in the youngest age group (1-8 days). Probability of surviving the rainfall increased 1.47 (95% CI: 1.25-1.83) times with each additional day. There was also a positive relationship between survival probability and mass-size residuals of chicks (beta = 0.17 +/- 0.07, P = 0.025). This study provides evidence for age-and condition-dependent mortality of semi-precocial chicks during an extreme weather event.

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