ne 
Annotated List 101 
Be Toa ae a 
(1897); ave. 15 yrs. May 14. 
Departure—Aug. I1 (1902 )—Sept. 14 (1896) ; 
ave. 9 yrs. Aug. 23. 
214. Oporornis agilis Connecticut Warbler. Rare 
transient. Dr. Montgomery collected specimens 
Sept. 20 and 28, 1889, and saw another Sept. 25, 
all in West Goshen; and [ took single birds on Sept. 
11, 1893 and Oct. 7, 1897 (Nos. 423 and 636, coll. 
F. L. B.). There are no spring records. 
Fall arrival—Sept. 19 (1893)—Oct. 7 (1897) ; 
ave. 5 records Sept. 26. 
215. Oporornis philadelphia. Mourning Warb- 
ler. Rare transient. Michener gave it as a summer 
resident, extremely rare. Four specimens have been 
taken by Josiah Hoopes and Witmer Stone (Bds. 
E. Pa. and N. J., 139); and according to Warren, 
Harry Garrett of Willistown has also taken speci- 
mens. Pennock states that on June 19, 1886, a 
female, which had been found a few days before, 
was brought to him, and a male was seen in the same 
vicinity about June 12. The inference is that the 
pair would have nested in the neighborhocd (Ool., 
ili, 46). 
Spring arrivalk—May 15 (1892)—May 27 
(1909) ; ave. 6 records. May 20. There are no 
fall records. 
216. Geothlypis trichas trichas Maryland Yel- 
lowthroat, “muff wren,” “wild canary,” “Yellow- 
bird,” “yellow wren.” Common summer resident. 
Nidification usually begins by May 15; average date 
for complete set, May 26. 
Berwyn: 
