Vol. XII 



1895 



I JoXEs, Bird Migration in lo'va. 2 ? 1 



Under date the 29th he writes: "Major Hamilton and Mr. 

 Audubon walked down to the Fort after breakfast and I followed 

 in about an hour. I very fortunately took my cane gun with 

 me and shot by the way two Black-headed Grosbeaks, a bird 

 which has not before been found this side of the table lands of 

 the Rocky Mountains, which is the case with a number of the 

 birds we have found. Mr. Audubon, — Bell, — Squires and I 

 walked two or three miles across the prairie in the afternoon 

 to a village of prairie dogs which Bell had discovered in the 

 morning." Mr. Harris then speaks entertainingly of the move- 

 ments of the interesting little animals and refers to the great 

 difficulty in shooting them. 



On the 31st they reached Fort Pierre, a point on the river 

 which they had long been striving to gain. No further points 

 of ornithological interest are referred to in the letter. The 

 plant life of the region is, however, described at considerable 

 length for the benefit of Dr. Spencer, to whom the letter was 

 "addressed, he being a botanist of some note. The letter was 

 left at Fort Pierre to be taken down the river by the next trap- 

 pers who were going in the direction of civilization. The last 

 entry is made on June i, just before the boat starts on up the 

 river towards the Yellowstone, that being the final destination 

 of the party. 



BIRD MIGRATION AT GRINNELL, IOWA. 



BY LYNDS JONES. 

 II. 



Fall Migration. 



The fall migrations differ from those of spring in certain par- 

 ticulars. It is not so simple a matter to study the southward 

 movement of the birds, but rather one requiring a great deal of 

 time, unlimited patience, and a speaking acquaintance with the 



