31 



Purple Martin. 

 So far as I know no one has ever succeeded in attracting 

 purple martins by means of food. They feed mainly on flying 

 insects. Martin houses, such as are made by J. Warren Jacobs 

 of Waynesburg, Pennsylvania, have been successful in Mas- 

 sachusetts. 



Vireos. 



Most vireos, especially the red-eyed and the blue-headed, 

 may be attracted by exposing suitable nesting materials. (See 

 under Baltimore Oriole, page 25.) 



Cedar Waxwiiig. 

 Cherry, wild cherry and mulberry trees are almost certain to 

 attract this silky-plumaged bird. Old orchards where canker- 

 worms breed call it in May and June, and it nests in the apple 

 trees. Like the rose-breasted grosbeak it feeds on potato 

 beetles. Cedar waxwings have been attracted to feeding places 

 in September by using fresh elderberries. Mr. Guy C. Allen 

 reports that a large flock of this species fed on dried crab apples 

 on the tree in winter. Waxwings are sometimes attracted by a 

 plentiful supply of nesting material. Mr. H. C. Denslow^ speaks 

 of bean poles, with the old vines hanging to them, as attracting 

 birds, especially this species. From June 10 to 20, 1918, from 

 4 to 12 birds were busy daily in pairs, shredding off bark from 

 the bean vines and flying direct to their nests. When cedar 

 poles are used the bark of the poles also may be utilized by 

 birds. 



Yelloiv Warbler. 



Several people have reported that when cotton batting has 

 been hung upon the limbs of trees or on shrubbery, about 

 ]\Iay 15, yellow warblers have used it in building their nests. 

 Dr. Anne E. Perkins of Collins, New York, writes that three 

 nests of this species were built mainly of cotton that she pro- 

 vided for them in May, 1919. 



Myrtle Warbler. 

 The fruit of the bayberry, or wax myrtle, is a powerful at- 

 traction for this graceful bird in winter. It has been known to 

 eat a little suet. 



