THE OOLOGIST 



45 



huckleberry ridges it is one of tlie 

 few birds to be found. 



It is entirely absent in heavy growth. 

 It nests on the ground and in low 

 brush. Its eggs 4 to 5 in number are 

 marked only by a few dark dots about 

 the larger end. 



This particular Yellowthroat's nest 

 differs entirely from the ordinary 

 Yellowthroat's nests in being in laurel 

 in quite heavy hemlock timber. The 

 nest was larger than usual and the 

 eggs unusually large. It is the only 

 set of Yellowthroats that I ever found 

 that was spotted and wreathed. They 

 arrive the first week in May and de- 

 part late in September. Very often 

 they are imposed upon by the Cowbird. 

 R. B. Simpson, 

 Warren, Pa. 



TWO DAYS AFIELD 



The First in the District of Columbia 



and the Second in New Jersey; 



A Comparison. 



On the morning of April 16th, 1916, 

 Mr. B. S. Taubenhaus and myself left 

 the 33d Street Station of the Pennsyl- 

 vania R, R. at 12:20 a. m. for the 

 purpose of gathering information re- 

 garding the status of the migratory 

 aspect of the section of the Dis- 

 trict of Columbia, south of the 

 Potomac River, and on the 17th I can- 

 vassed the territory in New Jersey in 

 Upper Passaic County, thereby secur- 

 ing a fairly good comparison between 

 the two sections. The principal object 

 of this comparison was largely to de- 

 termine the elapse of time between 

 the time certain species were present 

 in the Virginia counties and their ar- 

 rival at the point of observations in 

 Upper New Jersey. Daily cativasses 

 were made up to the 30th, in the sec- 

 tion of Upper Passaic County, for the 

 purpose of checking up on the dates 

 of arrival and obtained some fairly re- 



liable data on this point of compari- 

 son and elapsed time. 



The trip from New York City to 

 Baltimore, Md. was uneventful, but on 

 reaching the latter city the dawn had 

 occurred and from the car windows 

 numerous Flickers, Crows, Purple 

 Grackles and Robins were observed 

 while enroute from Baltimore to the 

 city of Washington. 



While in Washington we had tra- 

 versed along Delaware Ave. to S. W. 

 B. street, thence to 14th street and to 

 the Long Bridge over the Potomac. 

 While thus walking we observed a 

 colony of Purple Martins (10) at a 

 colony house adjacent to a fire house 

 on Delaware Ave. Numerous Tufted 

 Titmice and Song Sparrows were 

 present in the city, as well as numer- 

 ous Robins and Purple Grackles. A 

 single Hermit Thrush was observed 

 on S. W. B. street. While crossing the 

 bridge two Herring Gulls, seven Frank- 

 lin Gulls and a Fish Crow were ob- 

 served. 



On our arrival on the Virginia 

 shore, we followed the Alexandria 

 Road to the Columbia' Turnpike pass- 

 ing through Jackson City, and Arling- 

 ton Junction. Thence along the Co- 

 lumbia Turnpike through Arlington 

 to Barcroft. Thence along the Lees- 

 burg Turnpike over Munson and Up- 

 ton Hills to Falls Church. Thence to 

 Torrison, Ballston, Clarendon, Fort 

 Myer, Rosslyn, Arlington National 

 Cemetery to Arlington Junction and 

 finally to the Long Bridge, the point 

 of beginning. This itinerary included 

 a goodly portion of Alexandria Coun- 

 ty and a small portion of Fairfax 

 County, Virginia. 



The total number of species ob- 

 served during the day included forty, 

 as will be determined by the following 

 list, which bears notes regarding 

 their abundance and point of observa- 

 tion: 



