OF EASTERN PENNSYLVANIA. 129 



They are .70 of an inch in length by .55 in 

 breadth. 



Dendroeca discolor, Baird. 



The Prairie Warbler, a not very abundant 

 species in eastern Pennsylvania, revisits us about 

 the latter part of April or the beginning of May. 

 Although a denizen of open plains and thinly 

 wooded regions, it is far from being shy and sus- 

 picious, and will permit near approaches without 

 manifesting the least timidity. 



In searching for food, they may be seen moving 

 leisurely along the lowermost branches of trees, 

 examining every leaf and blade of grass for insect- 

 life, uttering at irregular intervals a brief cJrirr. 

 Exceedingly active creatures, they resemble the 

 Paridce, and in being expert Flycatchers, remind 

 us of the Redstart and the Myiodioctes. 



Coleoptera, diptera, spiders, and caterpillars, 

 contribute mainly to its maintenance. In the pro- 

 curement of food, its habits are both arboreal and 

 terrestrial. Chrysomela cceruleipennis, Platynus 

 cupripennis, Donacia metallica, Cymindis viridi- 

 pennis, Casnonia pennsylvanica, Haliica chalybca, 

 Cratonychus pertinax, Tabanus lineola, Culex 

 teenier hynchus, and larvae of Anisopteryx vernata, 

 Clisiocampa Americana, and many of the early 

 Nocluids, with Formica sanguined, Apis mellifica, 

 and various aphides, and others, have been found 

 in the many stomachs which we have examined. 



Mr. Nuttall speaks of the slender, filing notes 



i 



