1124. Sterna aleutica

1124. Aleutian Tern.
STERNA ALEUTICA.
Sterna aleutica, Baird, Trans. Chicago Acad. 1869, p. 321, pl. 31, fig. 1 ; Saunders. Cat. B. Br. Mus. xxv. p. 98 ; Ridgway, p. 45 ; Seebohm, B. Jap. Emp. p. 299 ; Tacz. F. O. Sib. O. p. 1013.
Male ad. (Alaska). Crown, nape, and loral streak black ; middle of forehead back to the eye white ; mantle slate-grey ; rump, tail, chin, lower cheeks, under wing- and tail-coverts white ; primaries dark grey, the outer web of the first blackish, a dark line on the inner web next the white shaft ; white wedges to the four outer primaries ; secondaries edged with white ; abdomen and breast pale slate-grey ; bill and legs black ; iris dark brown. Culmen 1.5, wing 10.65, tail 6.5, lateral tail-feathers 3.6 longer than the middle ones, tarsus 0.75 inch. In winter there is more white on the forehead.
Hab. Alaska ; both sides of the Bering Sea ; the Aleutian Islands ; Saghalien and South-eastern Japan.
In habits it is said to resemble the Arctic Tern, but its note is weaker and more squeaky. It deposits its 1 to 2 eggs on the ground, and these resemble those of the Arctic Tern, but are darker in ground-colour and more boldly marked ; in size they measure about 1.6 by 1.15.

BookTitle: 
A Manual Of Palaearctic Birds
Reference: 
Dresser, Henry Eeles. A Manual of Palaearctic Birds. Vol. 2. 1903.
Title in Book: 
1124. Sterna aleutica
Book Author: 
H. E. Dresser
CatNo: 
1124
Year: 
1903
Page No: 
817
Common name: 
Aleutian Tern
M_ID: 
4622
M_CN: 
Aleutian Tern
M_SN: 
Onychoprion aleuticus
Volume: 
Vol. 2
id: 
9945

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