a little hammond's flycatcher in alaska

songbird empidonax hammondii william alexander hammond hammonds flycatcher migratory birds tyrant passerine insectivorous alaska olivegreen tyrannidae bird western eye ring large head small wing bars coniferous migrate migration beak perch wings insect eating feather passeriform perched avian animal closeup nature olive colored ornithology wildlife forest insects outdoor canada delicate conifers common seep tree perching summer north america