116 



THE OOLOGIST 



vania) and so, on the uext 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 Ufe 

 was abundant. It was too late in the 

 season for much collecting or bird 

 photography, and I only succeeded in 

 obtaining three good photographs of 

 this character, the best one of which 

 WHS of the nests of a colony of Cliff 

 Swallows. 



In the north end of the horse pas- 

 ture was a high, rugged precipice. Far 

 up on the rocks these birds had built 

 a great number of their peculiar, 

 gourd shaped, mud nests. They had 

 evidently built them there for years, 

 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. 



EARLE 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. 



1 am optimistic enough to regard 

 I he 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 

 past 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. 



1!4, Wood Duck; formerly rare. 

 One was seen on May 27, 1901, at Vol- 

 unteertown, and about this time a nest 

 was found along the Tacony Creek, 

 near Crescentville, by a resident of 

 the city. 



191, Least Bittern; Common on the 

 Delaware marshes, Richmond; Ave 

 eggs, .June 1, 1904. 



201, Little Green Heron; scarce; 

 Holmesburg, June 29, 1909; five eggs. 



202, Black-crowned Night Heron; 

 rare. Holmesburg, May 1S97, 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. 



