i82 THE SCOTTISH NATURALIST 



2oth April, several at the Little Ross lantern at lo p.m. on 30th 

 April, and Darvel on 1 st May. These are late dates for the arrival of 

 this little Warbler with us. Last seen Corsemalzie on 8th September, 

 and two at the Killantringan lantern at 11 p.m. on 12th September. 



The Northern Chiffchaff, Phylloscopus collybita abietinus. — 

 The following records doubtless all refer to this form of Chiffchaff: 

 one Island of Noss on 21st May, single birds at North Unst on 12th 

 August and 4th September, a fair number at Lerwick between loth 

 and 24th October, and one at Swona on 31st October and ist 

 November. 



The Willow-warbler, Phylloscopus trochilus trochihis. — This 

 species was rather late in arriving in 19 15, the first records being 

 from Corsemalzie on the 19th April, New Galloway and Balerno 

 on the 22nd, Darvel and East Linton on the 23rd, Melrose, Beith, 

 Kilmacolm, Carbeth, and Murtle on 24th April. After this the 

 spread over Scotland was rapid, and the immigration continued 

 steadily up to 9th May. On nth May Willow-warblers were at the 

 Killantringan lantern at 3 a.m., on i6th and 20th May at the Little 

 Ross lantern at 11 p.m. and 12.30 a.m. respectively. There were 

 enormous numbers of this Warbler about Arisaig on 23rd and 24th 

 May, after which they mostly passed on and comparatively few 

 remained to breed. Passage migrants are recorded from Lerwick 

 on 6th and the Island of Noss on 24th May, and from the latter 

 station on 5th June. 



Throughout August and September there are many notes of 

 movement : our home-bred birds left us in a steady stream, this 

 being recorded from our southern lanterns and mainland stations 

 alike. The only rush noted is one at the Little Ross lantern on 

 loth August, otherwise the notes of departure, though constant, 

 refer to small numbers only. Last seen Balgay on 19th September, 

 Corsemalzie on 27th September, Little Ross on 4th October, and 

 Derrie (Mochrum) on 9th October. The first undoubted passage 

 migrants recorded are from Pentland Skerries on 2nd, 3rd, loth 

 and 14th September, and from 20th September to i8th October 

 there are constant notes of the arrival of small numbers of Willow- 

 warblers at Fair Isle, Butt of Lewis, North Unst, Lerwick, and 

 Pentland Skerries, and the records from the Isle of May during this 

 period may well be also those of passage. The last record for the 

 year comes from Fair Isle on 20th October. 



The Wood-warbler, Phylloscopus sibilatrix sibilatrix. — Is 

 first recorded from Rouken Glen on 30th April, Melrose on 2nd 



