15 



A clearer idea of the association and relative abundance of the 

 species at particular localities may be obtained, from the following 

 abstracts from my note-book, than can be gained from the general 

 list. 



At Forts Rice and Lincoln, on the Missouri River, where about 

 two weeks were spent in June, a greater variety of species occur 

 than at any point that we visited further west, owing, of course, to 

 the much greater extent of forest occurring here. At Fort Rice, in 

 the wooded- bottom-lands of the Missouri, birds were extremely 

 numerous, twenty or twenty-five species being common, and some of 

 them abundant, as indicated in the subjoined list. During the early 

 part of the day, and also toward evening, they filled the air with 

 song, so many singing at once that the song of any particular indi- 

 vidual could scai-cely be distinguished. At this time but few of the 

 species had commenced nesting. The forest growth of these bottom- 

 lands consists of large, rather scattered trees of oak, ash, willow and 

 Cottonwood, with a dense undergrowth of rose, willow and Symphori- 

 caipus, at times so dense as to be almost impenetrable. The follow- 

 ing birds were observed at this locality during the third week of 

 June: — 



Tardus migratorius. Not common. 

 Turdus fuscescens. Abundant. 

 Harporhynchus rufus. Frequent. 

 Mimus carolinensis. Very abundant. 

 Icteria virens. Very abundant. 

 Dendrozca azstiva. Very abundant. 

 Mniotilla varia. Not common. 

 Geothlypis trichas. Abundant. 

 Troglodytes cedon. Common. 

 Seiurus aurocapillus. Abundant. 

 Setophaga ruticilla. Common. 

 Hirundo lunifrons. Abundant. 

 Vireo olivaceus. Common. 

 Vireo gilvus. Common. 

 Chrysomitris tristis. Common. 

 Spizella soc talis. Common. 

 Spizella pallida. Common. 

 Chondestes grammaca. Common. 

 Cyanospiza amazna. Common. 

 Goniaphea melanocepliala. Not common. 



