28 REPORT ON THE MIGRATION OF BIRDS. 
doubt having overshot the land. Odd recordsin April at Fidra; 
a pair breeding there in May. 
In Autumn.—FEarliest movement noticed at XX VIL “ Large 
flocks of young birds, strangers.” No records anywhere in 
September. In October movements noted at IV. (N. Unst) 
between 11th and 25th. On 11th flocks flying east, with light 
S.E. wind and haze. Only one record at XXVI. (Bell Rock) on 
8th October. Rush decided at XXVII. on 17th, with strong E., 
rain and haze; two killed. Small movements at IV., VII. (Sum- 
burgh Head), and XXVII. in November, and a few up to end 
of January 1886. 
Corvip&.—FEarliest spring record of Rooks at XIV. (Pentland 
Skerries). Strong N.W. wind on 28th February. Rooks are 
recorded from the following stations:—VIII. (N. Ronaldshay), 
XIV., XXVII. (Isle of May); but all returns are very light 
indeed. In the first week in March a slight rush apparent at 
Sumburgh Head of Black and Hooded Crows—on Ist 50, on 6th 
18, light N. to N.E.; and a few almost every day at X XVII. at 
same time. Records of Carrion and Hooded Crows are from 
VII. (Sumburgh Head), VIII, XIV., and XXVII. Earliest Ist 
March; latest 29th April. From three or four to eight or ten 
daily; long straggling migration. 
Jackdaws at XIV. on 25th, and 26th two, light W.N.W., clear ; 
and at same place seven on 8th June and one on 13th, no doubt 
visitors from either the Caithness coast or from Orkney. 
Autumn.—Similar movements of Black Crows at IV. on 30th 
July, and at XIV. on 20th, 26th, two or three each time. Carrion 
Crows and Hooded Crows reported in autumn from IV., VIIL, 
XIV., XX VIL, XXVIII. B. (Fidra) in a pretty continuous and 
steady, though never heavy, stream, massing largest at IV. and 
at XIV., two, three, four, to once twelve (on 11th September at 
IV.) being the daily number observed. Dating from Ist record, 
26th July, at XIV., to latest record, January 26th, 1886, one 
bird at XXVII., with easterly and northerly gale. Rooks— 
Infinitesimal movement; only two records, one in June and 
one in December, both at IV. Ravens—Small number. Two 
at IV. on 22d August, eight at IV. on 5th September, strong E., 
haze, feeding on rock; and two on 20th October at same place. 
Four Jackdaws stopped a few days at N. Ronaldshay from the 
6th November. 

