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THE BALTIMORE ORIOLE. 
little fine, dry grass, with a few large, downy feathers, form 
the bed on which their eggs, generally five in number, and 
pure white, are deposited. 
The young are hatched late in May; and here I have 
taken notice of the common crow, in parties of four or 
live, watching at the entrance of these holes, to seize the 
first straggling young that should make its appearance. 
From the clouds of Swallows that usually play round these 
breeding-places, they remind one at a distance of a swarm 
of bees. 
The Bank Swallow arrives here earlier than either of the 
preceding ; begins to build in April, and has commonly two 
broods in the season. Their voice is a low mutter. They 
are particularly fond of the shores of rivers, and, in several 
places along the Ohio, they congregate in immense multi- 
tudes. 
BALTIMOBE OKIOLE. ( Oriolus Baltimore .) 
This is a bird of passage, arriving in Pennsylvania, from 
the south, about the beginning of May, and departing 
towards the latter end of August, or beginning of September. 
During migration, the flight of the Baltimore is high above 
all the trees, and is straight and continuous ; it is mostly 
performed during the day, as they are usually observed 
alighting, always singly, about the setting of the sun, utter- 
