420 MOTACILLID As. 
it demonstrated how one animal is subservient to the well- 
being of another.” 
The call-note of this bird is more shrill than that of the 
other Wagtails, and consists of two notes repeated in suc- 
cession, the second of which, in the musical scale, is one 
whole tone lower than the first. This species is numerous, 
and generally diffused during summer from the southern 
coast of England as far north as Durham and Northum- 
berland ; where, according to Mr. Selby, they collect in 
small flocks after the breeding-season, and move southwards 
towards the end of August. Montagu observed flocks 
of these birds in Devonshire in the autumn of 1802, 3, 4, 
and 5, and every succeeding year they were observed 
sooner or later in the southern promontories of Devon. 
According to Dr. Edward Moore, similar assemblages of 
these birds take place every year at the present time; and 
Mr. Blyth mentions having “ noticed a small flock of 
them, early one morning in September, upon the sands in 
the isle of Jersey, which had apparently not long alight- 
ed from a journey across the Channel, and had probably 
taken their departure from some part of the West of Eng- 
land.” 
The geographical range of this species, as far as at pre- 
sent known, is very limited; it appears to be a rare sum- 
mer visitor even to Ireland, according to Mr. Thompson ; 
and M. Temminck states that he has certainly never seen 
it on the continent of Europe in any locality between the 
Baltic and the Mediterranean. 
I am indebted to my friend Mr. Henry Doubleday of 
Epping, for the finest specimen of this bird I ever saw, an 
adult male in brilliant summer plumage. The beak is 
black ; the irides hazel; the top of the head, the lore, ear- 
coverts, nape of the neck, scapulars, and back, very pale 
