The Baltimore Oriole arrives from the south ... duller than in the male, paler behind; some dusky streaks on the throat. Young similar to the female, but with the upper parts brownish-yellow, the head ...

The orange supercilium, black eye line, and solid white wing patch are diagnostic for the adult male Bullock’s. The female and the immature can be confused with a dull Baltimore oriole.

The plumage of many species of our birds undergoes at times very extraordinary changes. Some, such as the male Tanagers ... of the Orchard Oriole from south to north is performed by day, and singly, ...