translate English to French: However, a mammalian predator is currently posing a challenge for Roseate Tern recovery; in 2003, a single mink killed almost the entire population of chicks on the Brothers Islands colony.
Toutefois, un mammifÃ¨re prÃ©dateur pose actuellement un dÃ©fi au rÃ©tablissement de la Sterne de Dougall; en 2003, un seul vison a tuÃ© presque toute la population de poussins de la colonie des Ã®les Brothers.