REPORT ON SCOTTISH ORNITHOLOGY FOR 1907 131 



entirely, and to see that the terms of their comparisons are 

 sufficiently parallel to make the comparisons of value. 



In regard to additions to our knowledge of the birds 

 breeding within our limits, great interest attaches to what 

 has been published relating to the Great Spotted Woodpecker 

 and Pied Flycatcher, 1 and further information will be looked 

 for with eagerness. It may be pointed out in this connection 

 that the phrase " extension of range " is often misapplied, and 

 that it is necessary to distinguish carefully between this and 

 " addition to our knowledge," which is another matter. 



It would be invidious to mention names in acknowledg- 

 ment of special services rendered in supplying information 

 to make the following report possible, but certain localities 

 are named so often as to make it plain from what quarter 

 most help is being received. To all contributors cordial thanks 

 are given for the assistance so kindly rendered. It is hoped 

 that the report will prove that there is reason for pride in 

 the loyalty and enthusiasm shown throughout the country. 



TURDUS VISCIVORUS (Mistle-Thrush). - - In song (Edinburgh) 

 before the end of December 1906. In pairs, gth March. 

 Lays, 9th April (Kirkliston). Young nearly fledged at Edin- 

 burgh on 23rd April. Young away near Glasgow, 4th May. 

 Last in song, loth May (Arisaig). Flock of between thirty 

 and forty at Port Ellen, Islay, 24th July. In N.W. Mull 

 twenty or so were observed on ist August, twenty on igth, a 

 dozen very wild on gth September, and four on lona on nth 

 and 1 2th. Seen on the spring and autumn passages at the 

 Fair Isle where it is " probably an annual visitor" (p. '82). 



T. MUSICUS (Song-Thrush). Before end of December 1906, singing 

 at Edinburgh. First in song in N.W. Mull on i3th January, 

 and again at daybreak daily from iyth to 2ist. Pairing at 

 Edinburgh, iyth February. Singing at Crosswood Reservoir 

 (950 feet elevation) on 25th February, where first fledgling 

 seen, 3rd May. Building at Edinburgh, iSth March. Young 

 newly hatched, Caldwell, April i6th. Ceases singing between 

 loth and 2oth July, thus last heard Edinburgh loth, Glasgow 

 i 7th, Kirkliston 2oth. In the Outer Hebrides, Bahr (A.S.N.H., 

 1907, p. 209) found none on islands where gulls breed, and 

 all seen were of the dark variety. Song only once heard by 



1 A paper upon this subject is now ready for press, by Harvie-Brown. 

 Records are wanting of any summer occurrences anywhere in Clyde, Wigtown- 

 shire, East Fife, and Forfarshire. 



