solitary flycatcher bird perched on stick over stream

american animal audubon aves avian banks behavior bird birding branch contopus cornell denuded distinctive eastern elevated empidonax extruding feed flycatcher freshwater grassy habitat habits hobby hunter identification identity insects national nature new northeast outdoors passeriformes peewee perched pewee plain profile range river setting sighting single sits small society soft solitary songbird state stick stream summer swamp territory tyrant tyrranidae view virens watchful water wild wood york