Noun | 1. | ![]() passeriform bird, passerine - perching birds mostly small and living near the ground with feet having 4 toes arranged to allow for gripping the perch; most are songbirds; hatchlings are helpless family Passeridae, Passeridae - true sparrows: Old world birds formerly considered weaverbirds English sparrow, house sparrow, Passer domesticus - small hardy brown-and-grey bird native to Europe Passer montanus, tree sparrow - Eurasian sparrow smaller than the house sparrow |