FLYCATCHERS. 323 
species, extremely variable in size, form, and colour. The average dimen- 
sions of these birds are about equal to those of a large sparrow, and many 
are smaller than that bird, although two or three species nearly equal the 
thrush in size. 
PIED FLYCATCHER. —(Muscicapa atricapilla.) 
SPOTTED FLYCATCHER.—(Muscicapa grisola.) 
The SPOTTED FLYCATCHER has received several local names in allusion 
to its habits, the titles WALL BIRD and BEAM BIRD being those by which 
itis most frequently designated. It is one of the migrating birds, arriving 
in this country at a rather late season, being seldom seen before the middle 
or even towards the end of May. 
