ORNITHOLOGIST 



— AND- 



OOLOGIST. 



Birds of Chester County, Penn. 



Most of the observations upon which the 

 following list is based were made in the vicin- 

 ity of Ercildoun, in the western part of the 

 county, althouoii frequent excursions were 

 made into different parts during the past four 

 years. 



In preparing this list I am specially indebted 

 to Mr. Wm. D. Doan, of Coatesville, who has 

 given me free access to his valuable collections; 

 and for assistance rendered in the identifica- 

 tions of the rarer species. In nomenclature 

 and classification the A. O. U. Code and Check 

 List of N. A. Birds has been followed. 



1. Colymbiis Jwlbcellii (Keinh.). IIolbo3irs 

 Grebe. Transient visitant; rare. 



2. Colymhits auritus (lAnn.). Horned Grel)e. 

 Transient visitant; rare. This species and C. 

 holboellH I have never met with in this county. 

 Wm. D. Doan has several specimens of both 

 species that he has collected in the county, 

 and C. J. Pennock gives them in his "Birds of 

 Chester County," of 1887. 



8. Pod'dynihus podicepfi (Linn.). Pied-billed 

 Grebe. Transient visitant; common. Arrives 

 first week in April, and again as early as 

 August 25. 



4. Urinator imber (Gunn.). Loon. Acci- 

 dental visitant. Have never observed them 

 here except in the month of November. 



5. Sterna hirundo (Linn.). Common Tern. 

 Accidental visitant. Mr. Doan took one in 

 the spring of 1885, on the Brandywine, near 

 Downingtown. 



6. IlydrocJteUdon nigra surinamensis (Gmel.). 

 Black Tern. Accidental visitant; rare. 



7. Merganfier antericamtH (Cass.). American 

 Merganser. Transient visitant; common. Ar- 

 rives first week in April, and again by the 

 second week in October. 



8. Merganser fierraf or (lAm^.). Red-breasted 

 Merganser. Transient visitant; rare. 



9. Lophodytes cucullatus (Linn.). Hooded 

 Merganser. Transient visitant; rare. 



10. Anas boschas (Linn.). Mallard Duck. 

 Transient visitant; tolerably common. 



IL Anas obscura (Gmel.). Black Duck. 

 Transient visitant; tolerably common. Ar- 

 rives first week in April; reappears second 

 week in September. I have taken them as 

 late as November 15. 



12. Anas penelope (Lirm.). Widgeon. Tran- 

 sient vistant; rare. I took one of this species 

 April 10, 1884. 



13. Anas carolinensis (Gmel.). Green- 

 winged Teal. Transient visitant; tolerably 

 common. Arrives generally by the last week 

 in March, and again by the second week in 

 September; occasionally met with until No- 

 vember 20, which is the latest I have observed 

 them. 



14. Anas discors (Linn.). Blue-winged Teal. 

 Transient visitant; rare. Have taken only 

 two specimens, one on Seiitember 10, 1884, 

 and the other September 18, 1886. Mr. Doan 

 took a fine specimen in April, 1886, on the 

 Octoraro Creek, near Atglen; and I think 

 this is the only record of this species being 

 taken in the county during the vernal migra- 

 tion. 



15. Spatula dypeata (Linn.). Shoveller. 

 Transient visitant; rare. Have taken but one 

 specimen. 



16. Dajila acuta (Linn.). Pintail. Trans- 

 ient visitant; tolerably common. Arrives third 

 week in March, and again the first week in 

 October. 



17. Aix sponsa (Linn.). Wood Duck. Trans- 

 ient visitant; common. Arrives second week 

 in March and may be frequently met with for 

 two weeks, reappearing the last week in 

 September. 



18. Aythya americana (Eyt.). Redhead. 

 Transient visitant; tolerably common. Ar- 

 rives last week in March, and the second week 

 in October. 



Copyright, 1S89, by Frank B. Webster. 



