66 Capt. A. W. Boyd on [Ibis, 



probably destroyed, as it was only a very short distance 

 behind the firing-line. 



Not uncommon at Flixecourt near Amiens, where I found 

 a nest on 1 July, on the branch of a tiny poplar; the young 

 were hatching on 15 July. Still singing in early August 

 1918 round Doullens. 



Phylloscopus trochilus. Willow-Warbler. 



First heard at Brie on 22 April; its numbers increased 

 greatly in two days, but it did not seem at all common 

 during the summer, during which I only heard occasional 

 birds singing in Havrincourt Wood and Trescault. Last 

 seen in Acliiet le Grand, 3 September. 



Phylloscopus coUybita. Chiffchaff. 



First heard at Brie as late as 22 April; common in 

 Havrincourt Wood and that district generally, and near 

 Amiens in the summer. Singing on 18 September at Achiet 

 le Grand and in Rouen on 26 and 27 September. ' 



A single bird on 21 October in the scrub by the Canche 

 estuary with migrant thrushes. 



Turdus viscivorus. Missel-Thrush. 



Fairly common in all parts. At the end of August and 

 early in September there was a flock numbering several 

 score in and about Logeast Wood near Achiet le Grand. 



Turdus musicus. Continental Song-Thrush, [and? Turdus 

 musicus clarkei — British Song-Thrush]. 



Distinctly uncommon. Except for immigrant birds seen 

 or heard only in four places : in Havrincourt Wood in June ; 

 at Flixecourt, near Amiens, in July; at Fouquereuil near 

 Bethune, and in Adiufer Wood south of Arras, in March 

 1918, and possibly those in the last two places were on 

 passage. On 21 October there were many very wild birds 

 in the scrub and a little copse on the sand-dunes on the 

 north side of the Canche estuary, but during the week 

 following only odd birds remained ; ou 9 November there 

 were a number in the Le Touquet Woods on the other side 

 of the estuary. On 12 January one bird in a flock of 

 redwings and blackbirds at Gorre, near Bethune. 



