202 General Notes. lApril 



and about three fourths of a mile fi'om where I saw the Cowbird in Novem- 

 ber. Today, December 30, I found Mr. Bubier's Cowbird within a few 

 rods of the place he reported him, and still accompanied by his English 

 retinue. — Arthur P. Stubbs, Lynn, Mass. 



Another Hybrid Warbler from Northern New Jersey. — On July 8, 

 1915, while in company with Mr. Samuel N. Rhoads on the edge of a 

 rhododendron swamp near Sussex, N. J., the writer secured a specimen 

 of the hybrid, supposed to result from the interbreeding of the Golden- 

 winged and the Blue-winged Warblers {Vermivora chrysoptera and V. 

 pinus). The specimen was a young bird of the year on which the wing 

 bands were not fully developed. Nevertheless they were developed 

 sufficiently to show bright yellow. This marking, taken with the general 

 appearance of the bird, made it approximate leucobronchialis, but on the 

 other hand the under parts were quite strongly suffused with yellow and the 

 throat was dusky. ■ , < . .• . ,- 



This bird, in company with several other young, at least two more, and 

 with an adult male chrysoptera, was under our observation for nearly an 

 hour. On several occasions the birds were within a few feet of us, so that 

 fairly accurate field observations were possible, and yet they were flitting 

 about so constantly in search of insect life, which was very abundant on 

 the sunny edge of the swamp, that it was almost impossible to get a good 

 shot at any of them. The depth of the water between the swampy islands 

 also impeded us greatly. 



Our conclusions in regard to the birds we did not secure, were as follows: 

 one adult bird was certainly present and that was a pure male Golden- 

 winged Warbler. This bird, though not actually observed feeding the 

 young, was with them at all times, sometimes occupying the same branch 

 with them and exhibiting the subtle behavior of a parent bird. If the other 

 parent was present, we could not distinguish it from the young. It should 

 be stated, however, that a Blue-winged Warbler, sex undetermined, had 

 been noted in the neighborhood not a hundred feet away, but this bird was 

 constantly associated with other warblers and was not once seen with the 

 hybrid family in question. As to the color of the other young birds, I 

 noticed particularly that they were all very light, especially on the under 

 parts. One of them had a more pronounced, dusky throat than the others, 

 and none of them seemed to have the under parts suffused with yellow, as 

 did the specimen secured. And yet they might have had, as the character 

 of under parts is very difficult to determine in the field, even when birds 

 are as close as these were. 



It was most unfortunate that we were chased away by an excited farmer, 

 otherwise we might have contributed something more definite to the store 

 of knowledge gradually accumulating about these interesting species. 



The specimen was mailed to Dr. Witmer Stone at the Academy of Natural 

 •Sciences, Philadelphia. Unfortunately it arrived in such bad condition 

 that it could not be preserved, but before it was thrown away, it was 



