Experimental infection of American kestrels, Falco sparverius, with Trichinella pseudospiralis Garkavi, 1972, and T. spiralis

Trichinella pseudospiralis Garkavi, 1972, but not T. spiralis was shown to be infective to American kestrels, Falco sparverius. A maximum of only 5.1% of the larvae administered were able to develop to the adult stage in the intestine. In vitro release of newborn larvae by female worms, recovered on days 10 and 15 postinoculation, was low. Adult worms were eliminated from the intestine by day 25 postinoculation. Few muscle larvae were first observed on day 20 postinoculation; their number increased with time but was never as high as in similarly experimentally infected mice.