76 The Ornithology of Chester County 
Departure—Oct. 9 (1890-1895-1899-1896) — 
Dec. 22:'C1887)\5 ave. 7. yrs Oct: 25: 
146. Passerculus sandwichensis savanna Savannah 
Sparrow. ‘Transient; Michener, Warren and Pen- 
nock consider it common, while Montgomery found 
it abundant in spring and fall. At Berwyn it is not 
at all common, and migration records from all 
sources all too scanty. 
Spring arrival—Mar. 28 (1889)—Apr. 18 
(1891-1915) ; ave. 8 yrs. Apr. 12. 
Spring departure—Apr. 13 (1886)—May 9 
(1891); ave. 5 yrs. Apr. 21. 
Fall date, Nov. 4, 1902. 
147. Ammodramus savannarum australis Grass- 
hopper Sparrow, “ground chippy,” “yellow-winged 
bunting,” ‘“yellow-winged sparrow.”  ‘Tolerably 
common summer resident; rather local, breeding in 
small colonies in grass fields. Nesting data: June 
4, 1884, Willistown, four eggs; taken by W. S. 
Hall. 
Berwyn: 
Arrival—Apr. 21 (1893)—-May 3 (1917) ; ave. 
12 yrs. Apr. 20. 
Common—May 8 (1909-16)—May 21 (1913); 
ave. 7 yrs. May 11. 
Departure—Oct. 6 (1905)—Oct. 7 (1917) ; ave. 
2\¥rs, (Oct. '7: 
148. Passerbulus henslowi henslowi Henslow’s 
Sparrow. Rare transient, and so listed by all au- 
thorities. I have a female taken at Berwyn, Oct. 
23° 11800 (No. '615,) coll) EL. 1B.) 4). 4 ant oe 
served six pairs at Cupola, Apr. 24, shot one on the 
