94 BULLETIN UNITED STATES GEOLOGICAL SUEVEY. {Yol.Y. 



tliat of the Go Jwit ; prevailiug tone rufous, of varyiug intensity in different birds, 

 and on different parts of tlio same bird, usually more intense under tlie wing than 

 elsewhere ; below, the lower throat streaked and the breast and sides with arrow- 

 heads and bars of dusky; above, variegated with black, especially on the crown, 

 back, and v/ing; tail barred throughout with black and rufous; middle quills rufous; 

 outer quills blackish and rufous ; no pure Avhite anywhere ; bill black, the under part 

 flesh-colored for some distance; legs dark. 



Occurs in many portions of Dakota and Montana. 



E"UMHNius iiUDSONius, Latli.— JacA; Curlew. 



Sexes are alike in color. 



Bill medium, 3 or 4 inches long; length IG to 18; wing 9; tail 3^. Plumage as in 

 the last species in pattern, but general tone much paler; quills barred. Breeds in 

 British America ; United States, chiefly during the migrations. 



I have never met with this bu-d in any part of Dakota or Montana. 



NuMENius BOKEALis, (Forst.) Jjath.—Esquimaucc Curlew. 



Sexes are alike in color. 



Bill small, under 3 inches long ; length 12-15 inches ; wing under 9 ; tail 3. Plum- 

 age in tone and pattern almost exactly as in the last species, but averaging more rufous, 

 especially under the wings, and outer quills not barred. 



Occurs in parts of Dakota during the migrations. 



AEDEID^. 

 Ardea heeodias, Linn.— 6^rm* Blue Heron. 



Occurs reguhiiiy during the spring and fall migrations. It tarries but 

 a few days in this vicinity in the spring time, but is observed in some 

 numbers during September and October. 



BUTORIDES viRESCENS, {lAmi.) C)2i^o.— Green Her on ; PoTce. 



Arrives the latter part of Apiil or the beginning of May, and remains 

 until October 5 breeds in the sloughs all over the Coteau, not, however, 

 in any great numbers. 



:N"tctiardea grisea n^via, (Bodd.) Al].— American Night Heron. 



Is seen here in considerable numbers from August 10 until October 

 25 5 is not seen during the spring migrations. 



BoTAURUS MUGITANS, (Bartr.) QowQ^.— American Bittern. 



Is found here from May 1 until October 1; is not at any time abund- 

 ant; breeds here. 



GEUID^. 



Grus AMERICANA, (L.) Tfimm.— White or Whooping Crane. 



Occurs only during the spring and fall migrations, and even then not 

 in any numbers. 



Grus canadensis, (L.) Temm. — Brown Crane. 



Is much more frequently met with than the preceding, and a few re- 

 main and breed on the Coteau. 



