116 THE OOLOGIST : 
vania) and so, on the next afternoon, 
we went after it with our comera and 
all the necessary paraphernalia. 
The nest was situated twenty feet 
from the ground, in a young beech, 
on the edge of a small thicket. With- 
in three feet of this tree was an oak, 
with a large limb which jutted out 
above the nest. It was an easy matter 
to climb this tree, fasten the camera 
to the limb (which was almost as 
good as a tripod on the ground) fo- 
cus, and make the exposure. The re- 
sult was very good and accompanies 
this article. 
Cliff Swallow. (Petrochelidon lunifrons) 
During the summer of 1905, I was 
located on a cattle ranch, four miles 
from the northwest corner of Yellow- 
stone Park, Montana. It was a wild 
remote region, in the heart of the rug- 
ged Gallatin Mountains, and bird life 
It was too late in the 
season for bird 
photography, and I only succeeded in 
was abundant. 
much collecting or 
obtaining three good photographs of 
this character, the best one of which 
was of the nests of a colony of Cliff 
Swallows. hae 
In the north end of the horse pas- 
ture was a high, rugged precipice. Far 
up on the rocks these birds had built 
peculiar, 
They had 
evidently built them there for years, 
a great number of their 
gourd shaped, mud nests. 
as traces of old nests were found in 
many sheltered places on the cliff, In 
all, I counted sixty-eight nests, which, 
judging from their good state of pres- 
ervation, had been built that season. 
They were in clusters of from six to 
a dozen each, like that shown in the 
accompanying photograph. 
BARLE R. FORREST. 
Summer Residents of Philadelphia 
County, Pa. 
Although it is the smallest and most 
populous county in Pennsylvania, Phil- 
adelphia is by no means devoid of bird 
life during the summer as the accom- 
panying list will testify. 
In the list, I have given the birds 
status as a breeder, together with the 
records of nests of all those that have 
actually been found nesting, and have 
also enumerated the few species that 
formerly bred in the county, so as to 
make the list as complete as possible. 
Those species of which no nests have 
been found have also been included, 
but only when the data was conclu- 
Sive in establishing the bird as a sum- 
mer resident, 
I am optimistic enough to regard 
the list as far from being complete, 
but that its completion shall eventual- 
ly occur is the sanguine hope of the 
writer. 
The records are based chiefly upon 
personal observation, made during the 
sast twelve years, chiefly in the North 
and Northeastern parts of the county, 
and contains very little data of others, 
and such are only included that are 
well authenticated, 
144, Wood Duck; formerly rare. 
Che was seen on May 27, 1901, at Vol 
unteertown, and about this time a nest 
was tound along the Tacony Creek, 
near Crescentville, by a resident of . 
the city. 
191, Least Bittern; Common on the 
Delaware marshes, Richmond; five 
eggs, June 1, 1904. 
201, Little Green Heron; scarce; 
Holmesburg, June 29, 1909; five eggs. 
202, Black-crowned Night Heron; 
rare. Holmesburg, May 1897, two 
fledgings taken from a nest by a cou- 
ple of men. Birds from heronries in 
the vicinity of the city occur all sum- 
mer at various localities. 
