446 The Wilson Bulletin — No. 93 



53. Cliff Swallow (Petrochelidon lunifrons) . The only colony 

 which we have discovered in Lake county is on a barn a few miles 

 west of Highland Park. The birds were fairly common here five 

 or six years ago, but the English Sparrows are rapidly driving 

 them away. 



54. Barn Swallow (Hirundo erythrogastra) , June 12th, 1915. Of 

 the many colonies found, the most interesting was in a lumber 

 shed near Waukegan. We counted twenty-five new nests and as 

 many old ones. A set of six eggs was found here. 



55. Tree Swallow (Iridoprocne iicolor). May 23rd, 1915. Two 

 nests were found on this date: one of which contained one egg, 

 and one which was being built. The birds have come to our at- 

 tention only lately, and have been found to be more common in 

 open country to the west than along the lake. At all nests the 

 birds showed no signs of fear. 4. 



56. Bank Swallow {Riparia riparia), June 2nd, 1914. At this 

 date only incomplete sets were found in a large nesting colony of 

 these birds in the bluff near Lake Forest, where they have nested, 

 to our knowledge, for the last ten years or more. There are about 

 150 pairs in this colony. 



57. Cedar Waxwing (Bombycilla cedrorum), July 26th, 1915. A 

 nest found at Ravinia on this date contained six eggs. They breed 

 very commonly here in brushy situations. Other dates are two 

 sets of five each on August 2nd, 1915, and two other sets of five on 

 August 4th, 1915. 



58. Red-eyed Vireo (Vireosylva oUvacea) , June 17th, 1914. Nest 

 found in thick wood on edge of Skodie Marsh in fork of witch- 

 hazel bush, and contained three young and one Cowbird. This 

 was the only nest we found where the young hatched. All the 

 others were deserted because of the Cowbird eggs laid in them. 



59. Warbling Vireo (Vireosylva g. gilva), July 2nd, 1915. We 

 first met with this bird on May 23rd, 1915, when it was heard 

 singing. Not recognizing the song, we hunted the bird out with 

 some difficulty, and found this Vireo. On July 2nd, 1915, while 

 visiting at the same place, we were shown a Vireo's nest, about 

 35 feet up in an oak tree, which proved to be a Warbling Vireo's 

 nest, and held one young bird, just ready to fly. About a mile 

 from here a bird was heard singing a number of times, but no 

 nest was found. 



60. Yellow-Warbler (Dendroica ce. (estiva). On June 13th, 1915, 

 two nests were found with four eggs each. These birds are very 

 abundant breeders in the brushy fields along the lake bluff and 

 the Skokie Marsh. This warbler, the Redstart, and the vireos 

 seem to be imposed upon by the Cowbird more than the other 

 birds. 12. 



