574 Annals of the Carnegie Museum. 



163. Spizella pusilla. Field Sparrow. 



Also a summer resident, which, like a number of other species, is 

 far more numerous on the mainland than on the Peninsula during the 

 nesting season. It was quite common and in full song on the sand- 

 barrens of the Peninsula on April 18, 1900, and doubtless arrived 

 considerably earlier. Here, too, it was rather numerous during the 

 fall migration, in October, the last being seen October 26. 



164. Junco hyemalis. Slate-colored Snowbird. 



This is perhaps best classed as a winter resident, although it is com- 

 paratively seldom seen in the depth of winter, seeming to retire 

 farther south at that season. It is very abundant in the spring and 

 fall migrations, particularly on the Peninsula, the locality being well 

 adapted to its needs. It is found usually in straggling companies in 

 the waste tracts, or on the edges of shrubbery and woodland, asso- 

 ciated with Tree Sparrows, Golden-crowned Kinglets, Black-capped 

 Chickadees, and others. In the spring of 1900 the last was observed 

 May 5, and on its return the first was noted September 19, although 

 it was scarcely common until the first week in October. However, 

 its numbers during this latter month varied considerably from day to 

 day, the fluctuations perhaps being due to migratory movements. In 

 the spring of 1903 the last was noted May 7 (Bacon). 



165. Melospiza cinerea melodia. Song Sparrow. 



This familiar species is abundant on both the Peninsula and main- 

 land, wherever there is suitable covert. An occasional bird may be 

 seen through the cold season, so that no doubt a few winter regularly, 

 but the bulk of the species is made up of summer residents only, com- 

 ing north some time in March, when they are in full song. A nest 

 with five eggs was. found early in May, 1900, placed on the ground in 

 the marsh at the mouth of Mill Creek. 



[Melospiza lincolnii. Lincoln's Sparrow. 



Little can be said of this species as a Pennsylvania bird. It is of such a retiring 

 disposition, and passes through in spring and fall so quickly and quietly, that it is 

 easily overlooked. It doubtless occurs here as a transient.] 



"166. Melospiza georgiana. Swamp Sparrow. 



This sparrow is a common and characteristic species of the marshes 

 on the Peninsula, where it occurs as a summer resident, haunting the 

 thick bushes near the margins of the ponds, and the growth of flags 

 and cat-tails in moist places, where it generally keeps well hidden. 



