Serratospiculoides amaculata in a Cooper's hawk (Accipiter cooperii).

During a routine examination of a female Cooper's hawk (Accipiter cooperii) nematodes were found in the thoracic air sacs. A total of 12 females and nine males were recovered and identified as Serratospiculoides amaculata. This is the first record of this parasite found in a raptor, other than a falcon, in North America.