Named for the heraldic colors of the Lords Baltimore family, colonizers of Maryland, the "Northern Oriole" or "Baltimore Oriole" is a "fiery" inhabitant of deciduous woodlands and the shade trees of apple orchards.
The female oriole is olive-brown with yellowish underparts and two pale wing bars.
One can set his clock at the arrival of the "Baltimore Oriole". These are the most reliable of migrating birds, arriving in May, throughout the United States and southern Canada, within one or two days of the same date each year. The breeding male perches near his lady love and makes a series of "bows". The female is seduced by the flaming orange breast and rump. Simultaneously, he serenades her with flute-like whistles.
Calls or song.
A variety of one or two notes. The oriole vocabulary is impressive. No two birds produce the same song.
Population and distribution.
When trees were planted in the Great Plains, the "Bullocks Oriole" and the "Baltimore Oriole" both expanded their range and began to interbreed. Therefore, most plains states birds are hybrids. Orioles are very sociable and travel in large flocks.
An amazing architect, the female "Baltimore Oriole" plans her nest high in a tree and weaves a 'deep handbag' of bark and plant fibers, which hangs from the tips of the longest branches. Here she lays 4-6 grayish eggs, streaked with brown and black hairlines.