REPORT ON THE MIGRATION OF HIRDS. 193 



Blackbirds passed in variable winds, and clear, at Lamlash. 

 The latest date is Dec. 3rd, when "Thrushes" passed Lochindaul 

 in the "daytime." But this may be due to local influences and 

 hard frost then registered. The next latest date is Nov. 24th, 

 when one was seen in the daytime, 2 p.m. ; wund N.E., fresh, 

 clear; this would give sixty-six days for the passage, or, taking 

 the later date of Dec. 3rd, seventy-six days. The rushes were on 

 Sei^. I9th (ut su}}.); a"greatrush" Oct. 21st to 28th. OnOct.21st 

 at Point of Ayr, two hundred "along with Blackbirds" seen at 

 1.80 p.m. ; wind N. and N.W., strong, clear, with occasional 

 showers. Also at the Rhinns of Islay, five seen, and so through 

 records of Oct. 22nd, 18th to 28tli, when three hundred "dark 

 grey birds larger than a common Thrush ! ! ? " (probably Missel 

 Thrush, Turdus viscivorus) were seen at Point of Ayr ; wind 

 S.S E., light, and hazy ; and at Skerry vore about fort}' (of which 

 ten killed) at 7 p.m. ; wind S.E., light breeze, and haze. 

 Thruslies travel with winds from S.E. to S.W. by preference, but 

 also with winds from W. to N.E., through N. ; observed most, as 

 with most other species at lanterns, in hazy and rainy weather, 

 but the great rush took place in "clear, with occasional showers," 

 and "hazy and fine." Returns show that out of sixteen dates 

 reported upon, only three show a diurnal migration, but one of 

 these three is the rush of three hundred " dark grey birds larger 

 than a common Thrush "f on Oct. 28th, at Point of Ayr. 



Blackbird. — The northernmost locality is Rhuvaal, wdiere 

 one struck on Dec. 1st, at 2 p.m., wind N.E., fresh; thence 

 southwards at M' Arthur's Head, Skervuile, Pladda, Lamlash, 

 Corsewall, Mull of Gallowa}^ and Point of Ayr. The earliest 

 date is Aug. 2Gth, at M' Arthur's Head. The latest date is 

 Dec. 1st, at Rhuvaal. The time thus occupied by the migration 

 was ninety-seven days. The rushes took place between 13th and 

 21st Oct., and the most favoured locality recorded is Point of 

 Ayr, where on Oct. 21st two hundred " mixed Thrushes and 

 Blackbirds" were seen at 1.30 p.m.; wind N.N.W., strong, and 

 clear, with occasional showers. They were visible at the various 

 stations in all winds, apparently from W. to E. and from S. to 



t We shall refer to these under " Birds unknown," but we have thought it 

 advisable to enter them here also ; they can easily be erased in future comparisons 

 if better data come to hand. 



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