male bullock`s oriole icterus bullockii perching on the tree branch in barr lake state park

animal barr beak bee bird birding birds birdwatching black blue branch brighton bullock bullockii bullocks colorado colorful eater environment feather forest grassland green icterus lake male migrant migratory natural nature orange oriole ornithology outdoor park passerine perched perching plant plumage red refuge reserve singing sitting small songbird spring state summer tiny tree usa wild wildlife wing winged yellow