Ornithology of Corsica. 453 



smaller than that of the Sardinian Warbler and may be 

 found in eistns or in thick bushes, such as myrtle, but not 

 at any height from the ground. Tiie eggs are three or, more 

 generally, four in number. Whitehead took his first nest on 

 May 6, but most eggs are laid during the latter half of May. 

 Not a single egg out of thirty-nine examined shewed any 

 tendency to erythristic colouring, though this type is quite 

 common in some parts of Spain and is also found in eggs of 

 the eastern race from Greece. The average size of thirty- 

 nine Corsican eggs is 16'79 x 13'03 mm. ; max. 19'1 X 13*7, 

 min. 15 X 12* 1. A nest found on ISIay 21 contained one egg 

 and also one of a Cuckoo. 



71. Sylvia conspicillata conspicillata Temm. Spec- 

 tacled Warbler. 



Another summer visitor to the " macchia " on the hillsides. 

 Whitehead found a nest with three eggs and snared the bird on 

 May 13. He also saw several others in the vicinity. Giglioli 

 describes this species as tolerably common and sedentary, 

 but this is probably an error. 



72. Sylvia undata (Bodd.). Furze- W^arbler. 



As already pointed out by Hartert and Parrot, Corsican 

 birds, on account of their smaller dimensions and dark 

 colouring, seem to approach very closely to the North African 

 form, /S. undata toni Hart., but the examination of further 

 material is desirable. Whitehead met with this species in 

 two localities in February ; Backhouse and Giglioli record 

 it from Ajaccio in winter, and the latter also met with it 

 in the Golfe de Porto early in October. I found young 

 already on the wing and old nests on the east coast on May 11. 

 Parrot records specimens from the Ajaccio market ; he 

 also obtained one from Solanio, and observed others on 

 Finosa at about 1500 ft., in March. It is evidently a local 

 resident. 



73. Sylvia sarda Temm. La Marmora's Warbler. 

 Sylvia sarda affinis Parrot, Orn. INIonatsber. xviii. p. 156 



(1910— Corsica). 

 Parrot states that on the average Corsican birds are 



SER. IX. VOL. V. 2 I 



