Petrochelidon lunifrons . 
Lake Umbagog 
Colony of Eave Swallows at Errol Dam 
1903 
June 15 
( 2 ) 
Mrs.Allen told me that the birds have nested on the barn ever 
since she and her husband have had charge of the place (about six¬ 
teen years) but that they have increased rapidly in numbers during 
the past few years. She also said that this was the first season 
when any of them have attempted to build under the eaves of the 
long shed over the dam itself. The nests have a secure foundation 
there as well as in the gable end of the barn. Nearly all the 
finished nests were of the old-fashioned type, i.e. with well 
marked bottle necks. The same thing is true of the nests I have 
examined lately (during the past week) at "Popple" Tavern and Up¬ 
ton. It is evident ihat the birds have increased and spread 
throughout the Lake Region of recent years. The Allens tell me 
that a large colony has become established at Middle Dam. Despite 
the unusual number of nests at Errol Dam there were seldom more 
than thirty or forty birds in sight there at any one time to-day. 
Others were coming and going continually, however, and a considera¬ 
ble proportion of the total number seen were usually collected a- 
bout a puddle of rain water in the road, collecting mud for their 
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