238 BRITISH BIRDS. [ vou, Xiam 
(Phylloscopus sibilatrix) was heard and seen on May 18, 1917, 
by Mr. H. E. Rathborne near the north shores of Lough 
Erne. On May 28 it was seen again both by Mr. Burkitt and 
Mr. Rathborne, and the latter heard either this or another 
bird between this date and June 7, but not subsequently. 
Hen-Harriers 1n NortH DerpysHtre.—Mr. E. Peat saw 
Hen-Harriers (Circus c. cyaneus) on two occasions in Leash Fen 
on October 16th, 1916. He had a good view of the first in 
the morning with glasses, and an even better one in the 
afternoon of the second, the bird perching on a post about 

two hundred yards away, and is sure that they were two © 
different birds. (Orn. Report for Derbyshire, 1916, in Journ. 
Derbyshire Arch. & Nat. Hist. Soc., 1917, p. 242.) 
BreepiInc Hapirs of Batrn’s SANDPIPER.—The Condor 
(May-June, 1917, pp. 77-84) contains an interesting article 
on the “ home life ** of Baird’s Sandpiper (Hrolia bairdii) hy 
Mr. Joseph Dixon, as observed on the North Alaskan Coast: 
and at Herschel Island in 1914. It is illustrated with 
photographs, showing the eggs in situ, the male bird 
incubating and an immature bird squatting on the shingle. 
The courtship appears to be conducted in silence, and the 
duty of incubation is shared by both sexes. 
GREEN SANDPIPER IN Kine’s County.—Mrs. H. M. Rait 
Kerr states that in addition to the Green Sandpiper (Totanus 
ochropus) already recorded (antea, p. 190) another was shot 
at Rathmoyle in August or September about eight years ago, 
and was identified by the late Captain Longworth-Dames 
(Irish Nat., 1918, p. 31). 
Buack TERN AND Arctic Sxua IN Co. Mayo.—Mr. R. F. 
Ruttledge (Irish Nat., 1917, p. 194) records a Black Tern 
(Hydrochelidon n. nigra) seen at close quarters on Lough 
Mask on September 13th, 1917. Only two records from 
Co. Mayo are given by Ussher (Birds of Ireland, p. 312). 
An Arctic Skua (Stercorarius parasiticus) was also seen on 
September 12th, near Inishmaine, Lough Mask. 
