indian house sparrow

sparrow urban watchful india perched male passer animal creature feathered asia eyes nature feathers wings asian indian house claws domesticus branch natural bird ecology perch species finch alert tachymetabolic environment wildlife vertebrate passeridae homeothermic songbird zoology twig avian invasive endothermic brown living ornithology wild little birding alive english fauna pale garden habitations female grey tiny life beautiful austria winter season cute outdoor small feather eurasian tree asseridae subspecies european europe bw