212 Thorne, Birds of Fort Keogh, Montana. [^^"i^ 



parts near the rivers, and there are some small willows. The left 

 bank of the river is high bluff, back of which is elevated rolling 

 prairie. Outside the river valley the country is all prairie or 

 ' Bad Lands.' 



No species is included in the following list that I have not 

 seen, and nearly all, except very large birds, are in my collection. 



1. Colymbus nigricoUis californicus. — Rare. Two June 3, 1SS9; one 

 May 14, 1S92. 



Larus sp.? — A few large and a few small Gulls ; one seen each year, 

 but I have never been able to kill any. 



2. Merganser americanus. — Saw one at a taxidermist's in Miles City, 

 Montana, who said it was killed here late in October, 18S9. 



3. Merganser serrator. — Rare. One female, April 27, 1889. 



4. Lophodytes cucuUatus. — Not common. From June 14 to July 17, 

 1889, about twenty were seen daily. At the latter date the pond they 

 frequented became dry. 



5. Anas boschas.- — ■ Common in spring and fall ; a few seen occasionally 

 during summer. 



6. Anas strepera. — - Not common. Transient. 



7. Anas americana. — Not common. Transient. 



8. Anas carolinensis. — Common. Must breed to some extent, as a few 

 remain all summer. 



9. Anas discors. — Common. Transient. 



10. Spatula clypeata. — Common. A few remain all summer. 



11. Dafila acuta. — Common. Transient. 



12. Aythya americana. — Not common. A few single birds and pairs. 

 Transient. 



13. Aythya affinis. — Rare. Two, March, 1889; no others. 



14. Glaucionetta clangula americana. — Rare. Flock of ten seen April 

 17, 1889. No others observed. 



15. Charitonetta albeola. — Rare. A few in fall ; not seen in spring. 



16. Erismatura rubida. — Rare. A flock of about forty observed April 

 21, 1889. No others seen. Two of the males killed were in almost perfect 

 breeding plumage.' The movements of this Duck seem very erratic 

 During the five and a half years I was stationed at Fort Lyon, Colorado, 

 I saw them but twice, viz., a flock of about fifty in March, 1883, and a flock 

 of twenty-five in March, 1886. In southwestern Texas, in the fall, I often 

 found them abundant on one day and none at all the next. 



17. Chen rossii. — Rare. One female killed April 25, 1S92. It was 

 alone and much emaciated. 



' Many Ducks called ' transient ' would probably be found to breed here^if 

 there were suitable nesting places. 



