136 THE SCOTTISH NATURALIST 
As most of the notes come from the lanterns of Little 
Ross and Pladda it would seem certain that some of it, 
at any rate, was emigration to Ireland. 
December. 
With variable winds and no spell of frost or snow little 
migration is recorded during December. 
NOTES ON THE MOVEMENTS OF BIRDS IN 1920, 
ARRANGED UNDER SPECIES. 
RAVEN, Corvus corax corax.—A male was trapped near Lauder 
on r4th April, and forty to fifty were seen going to roost on a cliff 
at Vallay (O.H.) on 22nd December. 
HoopvEpD Crow, Corvus cornix cornix.—Movement is recorded 
from 25th March to 21st April. In autumn an arrival is reported 
from stations in the north and east during the first half of October. 
CaRRION CROW, Corvus corone corone.—A few were seen at 
Pladda from 18th March to 21st May, one at Lerwick on 25th April, 
and a single bird arrived on the Isle of May on 16th September. 
Rook, Corvus frugilegus frugilegus.—Northward movement is 
noted from our Northern Isles from rqth March to roth April; 
three Rooks at Auskerry on 21st April, and a few at Fair Isle on 
7th May. 
STARLING, Sfurnus vulgaris vulgaris.—Some Starlings were at 
the Little Ross lantern at 1 a.M. on 17th January (1. 1920, 146), 
and from 16th February to 24/25th April there are many notes of 
arrivals from southern and south-western stations; no doubt many 
of these were our breeding birds returning. Whalsay Skerries 
and Noss Head record movements at these lanterns from 17th 
March to 16th April. From 22nd September to 6th November 
arrivals are noted at the Isle of May, and during this time also at 
our Northern Isles, while Pladda and Little Ross report constant 
movement, chiefly at the lanterns, from g/r1oth October to 28th 
November. 
GREENFINCH, Chloris chloris chloris.— A few Greenfinches 
visited Pladda on rst, 2nd, 3rd, and 8th January, while three males 
and four females were at Auskerry on 3rd April, one at Lerwick on 
15th April, and some at the Isle of May on 30th September. 
