firecrest - regulus ignicapilla small forest bird with the yellow crest singing in the dark forest, very small passerine bird in

animal autumn background beauty bird birding birdwatching branch bright bush color common crest feather firecrest forest forestry gold goldcrest golden green head ignicapilla ignicapillus little nature ornithology passerine perched regulus sing sitting small smallest song songbird spring sweet tiny tree wildlife winter wood woodland yellow