324: The Wilson Bulletin — Xo. 91 



Tern, Blue-winged Teal, Shoveller, Pintail, American and 

 Least Bittern, Sora Rail Coot, Killdeer, Yellowhead and 

 Thick-billed Redwing- Blackbirds. Kingfishers and Green 

 Heron nest frequently along the rivers. 



LIST OF SPECIES. 



Horned Grebe (Colymhus atiritiis). — A rare migrant. 



Eared Grebe (Colijmljiis nigricollis californicus). — A rare sum- 

 mer resident. Common in migrations. 



Pied-billed Grebe {Podilvmbiis podiceiis). — Breeds commonlj'. 



Loon (Garia immer). — A rare migrant. There is a mounted 

 spechnen. sec-ured in the county, in the L'uiversity museum. 



Herring Gull (LarHs argentatus). — A rare migrant. 



Ring-billed Gull (Larus (lelaimrensis). — A small number of these 

 gulls are seen each spring and fall. 



Franklin's Gull (Lanis fraukjini). — Abundant during late spring 

 and early fall. Also seen occasionally in siimmer. 



Forster's Tern (Sterna forstcri). — Occasionally common during 

 migrations. 



Least Tern (Sterna antiUarum) .--This interesting bird has nest- 

 ed regularly for many years along the Vermilion River, near the 

 town of "^'ermilion. and also at the mouth of the stream, a few miles 

 away. Nests have been found on several occasions. The colonies 

 are small, consisting of not more than seven or eight pairs. 



Bhick Tern (Hydrochelidon nigra surina)iiensis). — A common mi- 

 grant and locally an abundant nester. 



Double-crested Cormorant (Plialacrocorax aiiritiis aiiritiis). — A 

 tolerably common migrant. Agersborg states that they formerly 

 bred here. 



White Pelican (Pelecaniis crytlirorlninchos). — A frequent migrant, 

 passing in large flocks during April and late September and Oc- 

 tober. 



Merganser (Mergiif; ainericaniis). — A rare migrant. 



Red-breasted Merganser (Mergns .^errator). — A rare migrant. 



Hooded Merganser (LopJiodgfcs ciiciilUitiis) . — An irregular visitor. 

 Sometimes i)rol)ably In-eeds. 



Mallard (Aini^ i)hityrh!inchoN) . — A very al>undant migrant, and 

 a rare breeder. Remains until late in I>ecember. or even well on 

 into January, if portions of the Missouri River continue open. 



P.lack Duck (.l;*'/.\ nihriites). — A raro migrant: seen as late as 

 early June. 



Gadwal (ChanlchisiH lis strriHTiix). — A coniuKin migrnnt. 



P>nldpate (Marcca aDicricaiKi ) . — Alnnidant during migratioiis and 

 tolerably common in suininer. 



