PRELIMINARY CLASSIFIED NOTES 847 



5. Food. Worms, insects, berries. The young are fed, according to Mac- 

 gillivray at first with macerated substances for 8 or 10 days, after which they 

 receive insects and worms. Both parents share in the task. [F. B. K.] 



6. Song Period. From shortly after the time of their arrival to the date 

 when the young are hatched, generally about the beginning of June, but the song 

 has been heard as late as July 10 (Field, 1897, vol. Ixxxix. p. 884). The young 

 of the year, like young robins, utter a low warbling note, which, according to 

 Naumann, serves to distinguish the cocks from the hens at this stage. [F. B. K.] 



The following species and sub-species of the Turdince, are described in the 

 supplementary chapter on " Rare Birds." The occurrence of the forms whose names 

 appear in square brackets is doubtful : 



Dusky-thrush, Turdus dubius Bechstein. 

 Blackthroated-thrush, Turdus atrogularis Temminck. 

 White's thrush, Turdus aureus Holandre. 

 Siberian-thrush, Turdus Sibiricus Pallas. 

 [American-robin, Turdus migratorius Linnaeus.] 

 Isabelline-wheatear, Saxicola isabellina Cretzschmar. 

 African desert-wheatear, Saxicola deserti deserti Temminck. 

 Asiatic desert-wheatear, Saxicola deserti albifrons Brandt. 



xanthomelcena, Hemprich and 



Eastern russet-wheatear, ,. 



Ehrenberg. 



\ Saxicola hispanica, 

 Western russet-wheatear, J 



hispamca (Linnaeus). 



(N.B. This species includes both black-throated and black-eared forms 

 which have until recently been supposed to be two distinct 

 species. They are, however, now believed to be dimorphic forms 

 of one species.) 



Pied-wheatear, Saxicola pleschanka (Lepechin). 



Black-wheatear, Saxicola leucurus Gmelin. 



Siberian-stonechat, Pratincola torquata maura (Pallas). 



Whitespotted-blue throat, Cyanecula svecica cyanecula (Wolf). 



[Northern-nightingale, Luscinia luscinia (Linnaeus).] 



