Vol J909 VI ] Felger, Colorado Water Birds. 281 



142. Spatula clypeata. Shoveller. — Resident. In summer, com- 

 mon; in winter, uncommon; in migration, abundant. A common breeder 

 along the Barr Lake Chain. Have found eggs advanced in incubation 

 by June 24. 



143. Dafila acuta. Pintail. — Summer resident. (First week in 

 February-middle of November.) In summer, uncommon; in migration, 

 abundant. A few pairs breed regularly along the Barr Lake Chain. 



144. Aix sponsa. Wood Duck. — Migrant; very rare. (?-about May 

 1; Oct. or Nov.) C. A. Kendrick shot one at La Salle in October 

 or November, 1905. Judge Junius Henderson of Boulder records this 

 species for Boulder County. (Univ. of Colo. Studies, V, 3, p. 234.) The 

 specimens upon which that record is based were two males and one female 

 taken by Messrs. James Cowie and Bert B. Werley, 5h miles northeast of 

 Boulder at Twin Lake, in the end of October, 1904, and the three were 

 in one flock when taken. I am informed that Mr. P. J. Werley shot another 

 male at the same lake three or four years prior to the taking of these three. 

 Mr. Cooke reports it as having been taken "at Loveland and occasionally 

 on the lakes near Denver." He also states that Mr. E. J. Oslar has one, 

 "that was taken at Littleton about May 1, 1892." (Birds of Colo., pp. 55, 

 156.) I have notes on several others taken in or near this area but the 

 data thus far received on them are too insufficient to mention here. From 

 these known dates, it seems that it is present in or near this area only during 

 spring and fall migration. 



146. Marila americana. Redhead. — Resident. In summer, common; 

 in winter, rather uncommon; in migration, abundant. Have taken it at 

 Barr in mid-winter. Breeds along the Barr Lake Chain in goodly num- 

 bers, more abundantly than the following species. 



147. Marila vallisneria. Canvas-back. — Resident. In summer, not 

 uncommon; in winter, rather uncommon; in migration, common. A 

 few pairs breed regularly along the Barr Lake Chain. Have found fresh 

 eggs June 20. 



, 148. Marila marila. Scaup Duck. — Migrant; rare (March 20- April 5). 

 Only two specimens have, to my knowledge, been taken in this area, both 

 by Mr. Bryan Haywood at Calkin's Lake, east of Longmont, and just 

 within Weld County. One was taken March 26, 1904, and is now in the 

 State Historical Society collection; the other was taken April 5, 1902, and 

 is in the writer's collection. There seems to have been none recorded 

 from the surrounding territory. 



149. Marila affinis. Lesser Scaup Duck. — Resident. In summer, 

 not uncommon; in winter, rather uncommon; in migration, abundant. 

 A few pairs breed along the Barr Lake Chain. 



150. Marila collaris. Ring-necked Duck. — Migrant; rare. (March 

 29-about April 25.) There are but few records for the entire State on this 

 species and in the territory near-by this area I know of but two specimens 

 having been taken. For this area itself, I have only one record, a male in 

 my collection, killed by Bryan Haywood at Calkin's Lake, Mar. 29, 1903. 



