iSSs-] Agersborg on Birds of Southeastern Dakota. 2 7Q 



39. Tachycineta thalassina. Violet-green Swallow. — Probably 

 accidental ; breeds. 



40. Petrochelidon lunifrons. Cliff Swallow.— Common all sum- 

 mer; breeds. 



41. Cotile riparia. Bank Swallow. — Common; breeds. 



42. Stelgidopteryx serripennis. Rough-winged Swallow. — Much 

 rarer than the preceding; breeds, in common with that species, along the 

 Vermilion and Big Sioux Rivers. 



43. Progne subis. Purple Martin. — Common every summer. 

 Found breeding only in our towns ; not met with in the country. 



44. Ampelis garrulus. Northern Waxwing. — In some winters a 

 very common species. Its appearance in great numbers seems to depend 

 upon the abundance of the wild grapes, on which it exclusive!} - feeds. 

 When the grape crop fails the Waxwing can not be found. It arrives late 

 in December and remains till the last week of March. 



45. Ampelis cedrorum. Cedar Waxwing. — A rare winter visitor; 

 also probably attracted by the wild grapes. 



46. Vireo philadelphicus. Philadelphia Vireo. — Reported by Pro- 

 fessor Aughey from Northeastern Nebraska. I have never seen it here. 



47. Vireo olivaceus. Red-eyed Vireo. — Occasionally one is secured 

 late in the spring. 



48. Vireo gilvus. Warbling Vireo. — Rare spring migrant; found 

 breeding by Professor Aughey across the Missouri River in Nebraska. I 

 have never succeeded in finding its nest, nor have I seen the bird in summer. 



49. Vireo solitarius. Blue-headed Vireo. — Very rare during spring 

 migrations. 



50. Lanius borealis. Great Northern Shrike. — A i-egular winter 

 visitant; arrives early in October and leaves again in April. It seems to 

 follow in the wake of Spizella monticola. and leaves in the spring at the 

 same time. 



51. Lanius ludovicianus excubitorides. White-rumped Shrike. — A 

 species we should expect to find here but which I have never seen. That 

 it is not far away is proved by Professor Aughey in his Report. I may yet 

 be able to add it to the list of Southeastern Dakota birds. 



52. Hesperiphona vespertina. Evening Grosbeak. — A rare winter 

 visitor: seen during severe winters only, and then in small flocks of from 

 two to twelve. Feeds on sumac berries and elm buds. 



53. Carpodacus purpureus. Purple Finch. — Passes though here' 

 every spring in small numbers. 



54. jEgiothus linaria. Common Redpoll. — Seen in large flocks nearly 

 every winter. 



55. Astragalinus tristis. American Goldfinch. — Common resident. 

 In severe winters it may be absent for several weeks. 



56. Plectrophanes nivalis. Snow Bunting. — Formerly abundan 

 every winter but now only occasionally met with, and then associated with 

 the Horned Lark. Its absence may be due to the changes through hus- 

 bandry which this country has lately undergone ; very little small grain 

 is now raised, the chief crop being corn. 



