wilson's warbler (cardellina pusilla) in dense shrubs, commonly found across north america

wilson 039 warbler cardellina pusilla north america bird wildlife songbird insecteater forest birdwatching migratory yellow small shrub habitat species wild woodland nature behavior migration american birds closeup song conservation lover shrubs insectivorous native woods path ornithology wilson#39aph39#s dense commonly found insect-eating inhabits forests shrubs