1918.] OolugicaJ Notes jrom the River Somme valley. 349 



arrival or departure of migrants. Consequently, these notes 

 will be very incomplete, and will rely for their interest 

 on the fact that they were taken in a theatre of war under 

 unusual conditions. Only binomial names are used as the 

 birds were only identified by sight, and not collected. 



Except where Peronne is specifically mentioned, these 

 notes will refer to the river-mouth district only. 



Corvus corone. Carrion Crow. 



Common, and nesting in all the woods and spinneys. 

 First nest with eggs found on 20 April. The eggs were 

 slightly incubated. On that date numerous nests were 

 being built, and the weather Avas anything but spring-like. 



Corvus comix. Hooded Crow. 



Numerous near the mouth of the river as late as 19 April. 

 Two pairs were found nesting near Etaples by Major L. B. 

 Windle, R.A., and the following are notes extracted from a 

 letter from him: — "Nests were found about April 24, and 

 the second about May 8. The first had two eggs which I 

 left to get the whole lot, and on returning two days later 

 found all had been taken by somebody else. The second 

 had three eggs and the bird was sitting. Both nests were in 

 fir-trees, in the small bits of green stufi' close to the top, 

 and in small groves of trees which are dotted about in the 

 sand-hills. I could not find more than these two pairs, 

 though I searched all over the area round here within 

 about two miles, nor did I see any of the common black 

 crows nesting anywhere about." 



Corvus monedula. Jackdaw. 



Common in church towers, as at Abbeville. Not met 

 with in the country except when feeding, as there were few, 

 if any, suitable nesting-sites. 



Corvus frugilegus. Rook. 



Not so common as they are in England. Only two 

 " rookeries " met with, viz., near Abbeville and a small 

 one near Peronne. 



