wilsons warbler - cardellina pusilla small new world warbler with its hunted prey - caterpillar. it is greenish above and yellow

america animal avian beak bill bird birding birds birdwatching black branch cardellina caterpillar central cloudy colorful colour costa environment feather female forest green male migratory mountain national natural nature ornithology outdoors park passerine perched perching primeval pusilla rainforest rica songbird south southern tree tropical warbler wildlife wilson wilsons yellow