American kestrel
Effects on birds: Dicofol is slightly toxic to birds. The 8-day dietary LC50 is 3010 ppm in bobwhite quail, 1418 ppm in Japanese quail, and 2126 ppm in ring-necked pheasant. Eggshell thinning and reduced offspring survival were noted in the mallard duck, American kestrel, ring dove, and screech owl.