Trippe.] ‘ 234 October 16, 
36. Empidonax minimus. Breeds in large numbers in Ma- 
haska County; far less abundant in Decatur. 
37. Turdus mustelinus. Common; breeds. 
38. Turdus Pallasii. Not very common; spring and fall. 
39. Turdus Swainsonii. Not common; spring and fall. In his 
‘“‘ Notes on the Birds of Iowa” Allen reports T. fuscescens as being 
very common in Western Iowa; but in the course of two years’ care- 
ful observation in the southern part of the State, I have never seen 
or heard a single individual of this species. 
40. Turdus migratorius. Common; breeds. Not as familiar 
as the robin of the East. In spring and fall it is more abundant than 
in summer, though many remain to breed. Not seen in winter. | 
41. Sialia sialis. Abundant; breeds. 
42. Regulus calendula. Common; spring and fall. 
43, Regulus satrapa. Seen but rarely, in late fall. 
44, Anthus ludovicianus. Abundant; spring and fall. 
45. Mniotilta varia. Abundant in Mahaska County; far less 
so in Decatur; breeds. 
46. Parula Americana. Common in Mies County, but not 
seen in Decatur; does not breed. 
47. Geothlypis trichas. Common; breeds. The Mourning 
Warbler being very abundant during summer in Minnesota, directly 
north of here, I watched very closely during spring, expecting to find 
it on its northward migration, but did not see a con individual. 
48. Icteria viridis. Common in Decatur County, where it 
breeds; not seen in Mahaska County. 
49. Helminthophaga pinus. Abundant; breeds. 
50. Helminthophaga chrysoptera. A single specimen 
taken in May, in Mahaska County. 
51. Helminthophaga ruficapilla. Common; spring and fall. 
52. Helminthophaga celata. One specimen taken in Ma-, 
haska County, in May. 
53. Sciurus aurocapillus. Common; breeds. 
64, Sciurus ludovicianus. Common, arriving in the middle 
of April. Some remain to breed, the rest going north. K forms avery 
neat nest of twigs and grass, which it usually conceals under the 
roots of a tree overhanging a steep bankor ravine. Its song is differ- 
ent from that of S. noveboracensis. 
55. Dendreeca virens. Common in Mahaska County, in spring 
and fall, but not observed in Decatur. 
