CORRIGENDA AND ADDENDA 



VOL. I. 



p. 2. Raven. In confinement Mr. W. H. St. Quintin has observed that incubation was performed 

 by the female alone. 



p. 4. Hooded-crow. There is no evidence of the existence of this species in the Balearic Isles, and 

 the form which inhabits the lower Danube valley has been recently separated sub-specifically. 



p. 5. As a casual visitor the Book has occurred in Madeira, Iceland, and Greenland, and is not 

 known to breed in the Shetlands. S. E. Brock gives the incubation period as 17 to 18 days, which agrees 

 closely with results obtained from an incubator, and is probably correct. 



p. 6. Rook. Food. According to an important report issued by the Land Agents Society, there is 

 good evidence to show that grain forms a large percentage of the food of rooks. The words ' occasionally 

 grain ' give, therefore, a false impression. 



p. 7. The Jackdaw which inhabits Algeria is now separated as a local race, but the breeding range 

 of the western form (G. monedula spermologus) extends south to Andalucia and N. Morocco. In the British 

 Isles it is scarce in N.W. Scotland, and a rare straggler to the Shetlands, but is common in the Orkneys 

 and has bred in the Outer Hebrides. 



p. 8. Magpie. Entirely absent from the Outer Hebrides and does not breed in the Orkneys or 

 Shetlands. S. E. Brock gives the incubation period as 17 to 18 days, and fledging as 29 to 30 days. 



p. 8. To Plate A, Eggs of the Crow Family, add (Natural size). By H. Gronvold. 



p. 8. Magpie. Add to the end of the note on Distribution and Migration the following : ' The 

 species is non-migrant.' 



Plate 2. (To face page 18.) Hooded-crow and Carrion-crow for inverse order. 



p. 8. British Jay. Since this note was written the Irish Jay has been separated under the title of 

 G. glandarius hibernicus by Witherby and Hartert, and the occurrence of the Continental Jay, G. glandarius 

 glandarius (L.) has been definitely recorded (see Rare Birds Section, p. 463). 



p. 36. Rook. In the last line but one, substitute 'pass' for 'flash.' 



Plate V. (To face page 78.) In the legend to the photo of the Tree-sparrow's nest, substitute ' (see 

 PL 10) 'for '(see PI. 16).' 



p. 64. Greenfinch. Length 6 inches [152 mm.]. 



p. 69. Goldfinch. Line 2 from below, after ' continental race ' add C. carduelis carduelis. 



p. 72. Lesser Redpoll. For Linota flammea rufescens read Linota Unarm rufescens. 



p. 73. Mealy Redpoll. For Linota flammea flammea read L. linaria linaria. 



p. 74. Twite. Breeds in the Isle of Man, and has not been proved to nest south of Cheshire, 

 N. Stafford, N. Derby, and Yorkshire (with the sole exception of the Devon colony mentioned), though 

 it is believed to breed in North Wales. 



p. 75. Linnet. Not known to breed in Shetlands or Outer Hebrides, to which it is only a straggler. 



p. 77. House-sparrow. A male has been recorded as incubating by J. H. Owen (British Birds, rii. 

 p. 52). In the Outer Hebrides it is only known to breed in three localities. 



p. 78. Tree-sparrow. In Ireland it is now known also to breed in Co. Mayo (1905), Derry (1906), 

 Donegal (1907), and Kildare (1913). Cf. C. J. Patten, British Birds, vii. p. 38. In Scotland it is more 

 general on the east side, and scarce on the west. Breeds on St. Kilda. 



p. 79. Crossbill. As two races are found in the British Isles, trinominals should be used and the 



VOL. IV. 4 I 



