18 



Chondestes grammaca. Common. 



Dolichonyx oryzivorus. Only one seen. 



Molothrus pecoris. Common. 



Agelcsus phceniceus. One small colony. 



Xanthocephalus icterocephalus. A few pairs, with the preceding. 



Scolecophagus cyanocephalus. Occasional. 



Sturnella ludoviciana var. neglecta. Common. 



Chordeiles popelue var. Henryi. Common. 



Speotyto cunicularia var. hypogcea. One pair seen. 



Circus cyaneus var. hudsonius. One pair seen. 



Archibuteo ferrugineus. Several seen. 



Falco communis var. anatum. A single pair seen. 



Pedicecetes phasianellus var. columhianus. Not frequent. 



JEgialitis vociferus. Occasional. 



Actiturus Bartramius. Common. 



Ardea herodias. A single one seen. 



Anas boschas. One pair seen. 



Along the Yellowstone and Musselshell are found nearly all the 

 species observed at Fort Rice, but generally more sparingly repre- 

 sented, and with the addition of Sialia arctica, Salpinctes obsoletus, 

 Centrocercus urophasianus and JEgialitis montanus. A few others not 

 yet mentioned were also occasionally met with, as shown by the fol- 

 lowing general list, in which one hundred and eighteen species are 

 enumerated. 



TURDID^. 



1. Turdus migratorius Linn. Robin. 



Nowhere very numerous. It was rather frequent in June near 

 Fort A. Lincoln, and a few were observed at Fort Rice, and along 

 the Heart River. It was not again met with till we reached the 

 valley of the Yellowstone, where a few pairs were seen at distant 

 intervals. Along the Musselshell they were observed in considerable 

 numbers wherever there were plenty of small fruits, as gooseberries, 

 currants, bullberries (Shepherdia argentea), and wild cherries (Prunus 

 virginiana). 



2. Turdus fuscescens Stephens. Wilson's Thrush. Veery. 

 Common in the timbered bottom lands of the Missouri at Fort 



Rice, but not elsewhere met with. One nest was found by Mr. Ben- 

 nett containing eggs thickly speckled with very small dots of olive. 



