THE OOLOGIST. 



15. Anas obscura (black duck). Giveu by Barnard as rare. Michener also gives it. 

 Occurs occasionally. 



16. Anas penelope{-w\6.geon). A rare migrant. (M.) 



.17. Anas carolinensis (green-winged teal). Of rare occurrence. (M.) 



18. Spatula clypeata (shoveller). Rare. iB. and M.) 



19. Dafita acuta (pintail). Given in 1881 list of Michener. 



20. Aix sjwnsa (wood duck). Rather common on migrations and probably breeds 

 rarely. Barnard says, "Frequent;" Warren, "Occasional," and Michener, "So far as I 

 have been informed, this is the only wild duck that has deigned to nest and breed in this 

 county; unlike its kin, it prefers a hollow tree for a nesting place." During the spring 

 of 1886 two broods of Wood Ducks were found in Chester county. 



21. Aylliya americana (redhead). "Occasional winter visitant." (Warren. (M.) 



22. AytJiya vallisneria (canvass-back). Probably a casual visitor on the migra- 

 tions. (M.) 



23. Ayihya marila neartica (American scaup duck). Occurs occasionally. (M.) 



24. Aythya afflnis (lesser scaup duck). Rather common on streams and ponds; in 

 small flocks in spring and fall. 



25. Aytliya collaris (ring-necked duck). Appears in Michener's list. 



26. Qlaucionetta clangula americana (American golden-eye). Given by Michener. 



27. Gharitonetta albeola (bufile head — butter ball). Frequently met with when 

 migrating. 



28. Clangula Jiyemalis (old-squaw). Occurs but rarely. (M.) 



29. Erismatura rvbida (ruddy duck). I have known of several instances of the 

 capture of this species in our county. " Rare," (B ); "Frequent," (W.) 



30. Branta canadensis (Canada goose). Common in spring and fall flying on its 

 migrations, but rarely stops in our limits. 



31. Olor columbianus (whistling swan). Rare migrant. Given by Michener in 

 later list. Not given by B. or AV. I have never seen it in Chester county. 



32. Tantalus loculator (wood ibis). A very rare straggler. One specimen was 

 taken a number of years ago by the late Vincent Barnard. 



33. Botaurus lentiginosus (American bittern). Common in some parts of the coun- 

 try. M. gives it "resident; common." I have found no positive record of its nest hav- 

 ing been found, but specimens have been shot throughout the siimmer months, AVarren 

 has a specimen taken December 8, 1879. 



34. Botaurus exilis (least bittern). Given in Michener's later list. Not given by B. 

 or W. Probably of rare occurrence. 



35. Arclea herodias (great blue heron). Rather common in spring and fall as a mi- 

 grant; may breed, but I have never met with its nest nearer than the borders of the Dela- 

 ware river, twenty miles distant. 



36. Ardea egretta (great white egret). Of accidental occurrence. Given by Bar- 

 nard, who says "seldom found." Warren had a specimen taken in adjoining county of 

 Lancaster. I have never seen it here. 



37. Ardea candidissima (snowy heron). Rare; occurs as a straggler only. 



38. Ardea virescens (green heron). An abundant summer resident; frequently 

 breeds in colonies of six to ten pairs; nest in trees and bushes, a few sticks loosely put 

 together sufficient to hold the three or four pale-blue eggs. Food, fish, frogs and insects 

 from marsh-land mainly. 



39. Nycticorax namus (black-crowned night heron). Common in spring and fall; 

 probably breeds; nesting similar to that of green heron. 



40. Grus canadensis (little brown crane). Given hj B. and M. Both these records 

 are based on the same occurrence, as I am informed, liy the venerable Dr. Michener, 

 who tells me that about 1840 a flock of about five individuals passed along the west 

 branch of the AVhite Clay creek, fljdng northward, and one was shot and mounted by 

 him. This bird was in the doctor's collection for years. Later it went to Swarthmore 

 college and perished in a fire a few j^ears ago. 



41. Rallus mrginianus (Virginia rail). Breeds occasionally; two nests have been 

 taken within a mile of Kennett Square, one about 1878, by Asher Palmer; the other by 

 some boj's in 1883. Both nests were in swamps near streams. I have an egg in my col- 

 lection from the latter nest. 



42. Porzana Carolina (sora). Rather common migrant. 



43. Porzana noveboracensis (yellow rail). Given by Michener in his 1881 list. I 

 have never seen this bird in our county. 



44. Gallinula galeata (Florida gallinule). Not common; occurs only as a migrant. 



