NOTES AND QUERIES. 275 



long time. At Wroxton, too — where there are some woods — I am 

 told they have very few Squirrels now. — 0. V. Aplin (Bloxham, 

 Oxon). 



A VES. 



White Wagtails in Co. Mayo. — On their spring migration this 

 season Motacilla alba has paid its usual visit to the island of 

 Bartragh, Killala Bay. On April 24th four birds were observed on 

 their usual haunt, a wet sandy flat growing a short coarse grass, 

 extending from the shore of the estuary to the sandhills, and situated 

 close to the stackyard and garden. On the 28th another small party 

 were noticed at the same place, out of which Captain Kirkwood kindly 

 obtained three specimens for me to send to friends. Now, with the 

 exception of one season, they have regularly visited Bartragh every 

 season since 1897, proving without any doubt that the Motacilla alba 

 have a regular line of flight, passing over the island of Bartragh on 

 their way to their northern breeding grounds. It is strange that 

 being so regular in visiting the island on their spring migration only 

 once was a solitary bird observed in autumn. — Eobeet Wareen 

 (Ardnaree, Monkstown, Co. Cork). 



Willow-Titmouse in Norfolk. — The Willow-Tit, which was identi- 

 fied at Beccles by Mr. C. B. Ticehurst last August, was erroneously 

 entered in the " Eeportfor Norfolk " (ante, p. 175) as having belonged 

 to the northern race, instead of being recorded as a British Willow- 

 Titmouse (Parus atricapillus kleinschmidti, Hallmayr) ; see ' Hand- 

 list of British Birds,' p. 46. — J. H. Gurney (Keswick, Norwich). 



A Bornean Example of Butreron capelli, Temm., with Double 

 Hallux. — According to Bateson, in his ' Materials for the Study of 

 Variation,' 1894, p. 390, the records of polydactylism in birds are few 

 and far between ; perhaps therefore the following case may be worth 

 placing on record : — A wild female Large Thick-billed Green Pigeon 

 (Butreron cajpelli, Temm.) — a species confined to Malaya — was shot 

 recently near Bau, Sarawak, by Mr. R. B. Williams, and presented by 

 him to the Sarawak Museum. In both feet the hallux is duplicated 

 from the tarso-metatarsus, the additional hallux, perfectly formed 

 with separate metatarsal, arising between the ordinary hallux and 

 the second digit, and with a web loosely connecting the proximal 

 phalanges of the double hallux, but not thus connected to the second 

 digit. The ordinary hallux is similar in size and development to that 

 of an undeformed specimen, and the additional hallux is the same, or 

 if anything very slightly larger. The specimen is now in the Sarawak 

 Museum. — J. C. Moulton, Curator of the Sarawak Museum (Sarawak), 



