34 The Ornithology of Chester County 
little island in a millpond. A year or two later, the 
species was introduced on an adjacent farm, but 
were speedially absorbed by the Mallard. It has 
however, been recently seen during the breeding 
season on the Schuylkill, above Valley Forge. 
21. Chanlelasmus streperus Gadwell. Straggler. 
Kennett Square, Dec. 26, 1912, an individual was 
flushed from a millrace and positively identified at 
a distance of ten feet by C. J. Pennock and C. A. 
Thomas (Thomas MS.,). 
22. Mareca americana Baldpate. An example 
was shot on the Henry T. Coates dam at Berwyn, 
about June 20, 1889, and presented to J. W. Sharp. 
A rare straggler. 
23. Querquedula discors Blue-winged Teal. Rare 
transient. Dr. Montgomery shot an adult and saw 
another on the Brandywine near Lenape, Aug. 8, 
1889; and one was shot on Campbell’s dam, Berwyn, 
Oct. 15; 2900, by N.C. Cass: 
24. Spatula clypeata Shoveller. Straggler. Given 
by Barnard, Warren and Michener as rare. I have 
not met with it. 
25. Dafila acuta Pintail. Straggler. Included on 
the authority of IT. H. Jackson, who has a distinct 
recollection of being offered a freshly killed speci- 
men by a local gunner, who had shot it on the 
Brandywine. ‘This was in the early ’90s. Michener 
includes it in his later list without comment. 
26. Aix sponsa Wood Duck, “acorn duck,” “sum- 
mer duck,” “wild duck.”’ Rare summer resident and 
transient. Formerly frequent, according to Barnard. 
Pennock found it rather common on migrations and 
