REPORT ON THE MIGRATION OF BIRDS. 199 
respectively; the direction of their flight was usually W. or N.W. 
On Dec. 13th a flock passed S.; most passed with a S., 8.S.W. 
or 8.W. breeze, in cloudy or clear weather; in two instances with 
a N.W. wind. ‘They were observed during daylight. 
Witp Swan.—At Devaar on Dec. 11th, six seen at 4 p.m., 
light airs, with haze; and on Jan. 4th, three were seen flying 
south, in clear weather, at Rhuvaal lighthouse. We say nothing 
of the reported occurrence of Cygnus americanus on our coasts, 
but think the record (p. 111) premature. 
Witp Ducx.—At Butt of Lewis a Duck was killed on Dee. Ist, 
at 8 p.m., wind E., light and clear. Others occurred in November 
and December at Rhuvaal and Devaar. At Rhuvaal, between 
Nov. lst and 30th, three or four hundred Ducks passed between 
8 a.m. and 3 p.m.; wind variable, light, and showery weather. 
Most of the migration seems to have been observed through the 
day. In none of the reports are the species identified, being 
described as either “ Ducks” or “ Wild Ducks.” 
Wivceon, Anas penelope.—At Monach Island on Oct. 27th, a 
few were seen at 12 noon; wind S.8.E., fresh, and clear. 
SHELDRAKE, T'adorna vulpanser.—At Pladda, on May 28rd, 
six (two males and four females) seen at 1 p.m., wind N.E., light, 
and haze; remained on the island till the middle of June. 
Eiwrer Ducx.—At Rhu Stoir on June 30th, two males and 
two females seen at 11 a.m.; wind S., fresh breeze, showers. At 
Dhuheartach on Dec. 3rd, twenty seen at 10 p.m.; wind N.E., 
light, clear. At Devaar on Dec. 13th, twelve seen at 1 p.m.; 
wind N.N.W., light breeze, haze. 
Srorm Pretren.—At Butt of Lewis in July, August, and 
September, an occasional bird at the glass, always at night, 
always in hazy or rainy weather, generally “haze and rain” 
together; wind in three out of four instances S.W., and once on 
July 3rd, W.N.W., stormy. At Rhu Stoir a goqd many were 
observed ‘‘not on passage” between 17th and 20th Aug. between 
6 p.m. and 10 p.m., wind N. to E., light, haze and rain; and at 
Rhinus of Islay on Sept. 17th, one struck at 2 a.m., wind S., 
light, and haze. 
Sea-rowi.— The following notes upon sea-fowl as observed at 
several stations—notably at Cape Wrath—will, we think, prove 
interesting :—At Cape Wrath, Mr. M‘Gill reports all the sea-fowl 
as deserting their breeding-haunts there on Aug. 16th, and both 
t 
