■282 Pennock, Birds of Delaware. [f^^ 



Geothlypis Philadelphia. Mourning Warbler. — One individ- 

 ual of this bird was observed at close range at Edge Hill on May 

 12, 1907, and another at Oak Lane on May 31, 1907. These are 

 my only records of this species and the bird will have to be regarded 

 as a very rare migrant. Both identifications were made with 

 great care. 



Sitta canadensis. Red-breasted Nuthatch. — This erratic 

 bit of bird life was unusually abundant in the fall of 1906, and 

 irom September until late November was seen on practically every 

 field trip. These periodical invasions of Red-breasted Nuthatches 

 seem worthy of note. The last one of any size occurred in 1903. 

 For several years the bird will be rare and then, again, take a place 

 among our common transients. 



Hylocichla fuscescens. Wilson's Thrush. — The Veery formerly 

 nested in the vicinity of Glenside, Montgomery County, which is 

 the most southern locality of its breeding in Pennsylvania. Several 

 times in the past two years the writer has heard in June and July 

 notes which he was practically sure belonged to this bird but was 

 unable to secure any specimens. 



BIRDS OF DELAWARE — ADDITIONAL NOTES.^ 



BY C. J. PENXOCK. 



The 'Preliminary List of the Birds of Delaware,^ was intended 

 to embrace such species only as had come under the observation 

 of the authors or for which they could find positive record of an 

 occurrence within the State. On account of the limited amount 

 of time that had been devoted to the work previous to the appear- 

 ance of that list it was evident that many species of birds remained 

 to be noted and some species recorded therein as rare might become 

 apparently more abundant after further observations. 



^ Read at the meeting of the American Ornithologists' Union, Philadelphia 

 Pa., Dec. 12, 1907. 



2 See 'The Auk,' Vol, XXII, No. 2, April, 1904, pp. 194-205. 



