REPORT ON SCOTTISH ORNITHOLOGY FOR 1905 203 



L. RIDIBUNDUS (Black-headed Gull). Assumes hood, 23rd February, 

 Kirkliston, Edinburgh, 26th. Pair apparently nesting at Loch 

 of Huxter, Whalsay. 



L. FUSCUS (Lesser Black-backed Gull). Bute (2), Glasgow Harbour 

 (i), on i4th March; Delny (Ross), on yth April (i), the first 

 seen this year; N.W. Mull, loth April, first appearance on 

 way to nesting ground. " I have failed to identify it as resident 

 in winter in N.W. Mull " (MacDonald). Not seen on the Fair 

 Isle after 3rd September (p. 77). 



L. MARINUS (Great Black-backed Gull). At Tent's Muir on 23rd 

 September, ninety - three birds, including a few immature 

 (Godfrey and Barbour). 



L. GLAUCUS (Glaucous Gull). At Unst, igth January, old and 

 young, many seen, two shot. At North Berwick, nth November, 

 one (juv.}; i2th, Sule Skerry, one. 



L. LEUCOPTERUS (Iceland Gull). Reports of single examples at the 

 Flannans on 24th January (ad.}, 28th February (juv.}, loth 

 September, 6th November (juv.}, i3th. One at Unst, loth 

 February. One at Crail, ist April. 



RISSA TRIDACTYLA (Kittiwake Gull). At the Flannans, 5th March 

 (50); icth (hundreds). In numbers at the Fair Isle till 7th 

 October (and thereafter probably), chiefly adults (p. 78). 



MEGALESTRIS CATARRHACTES (Great Skua). Unst, i ith April, several, 

 wind S.E. (first eggs 24th May, at least thirty-four nests with 

 eggs on ist June) ("A.S.N.H.," 1905, p. 182). Foula, i7th 

 April ("Shetland Times"). 



STERCORARIUS CREPIDATUS (Arctic Skua). Many at Unst, i3th 

 April. On ten occasions in East Fife between 3rd July and 

 3rd October. Never more than three seen at a time. At 

 Kincardine-on-Forth, on i8th September, one shot out of six. 



ALCA TORDA (Razorbill). At the Flannans on 3rd April, a great 

 number. Left Sule Skerry about 25th July. An immature 

 one on the Waulkmill Glen Dam (E. Renfrew). At the Bell 

 Rock, on 1 3th to i5th October, continuous flocks passing 

 south. 



URIA TROILE (Guillemot). At Corsewall large flock on water on 

 6th February. At the Flannans, a few, on i4th to i5th 

 February. Not again seen there till 2nd March, and appeared 

 then in hundreds. At Crail, on 2nd April, countless small 

 flocks all flying north. Passing south at the Bell Rock in 

 continuous flocks on i3th and i5th October. 



URIA GRYLLE (Black Guillemot). Unst, loth June, fresh eggs 

 found. 



