[49]

p 436 Shearwaters young grey

509 Ivory gull do variegated

525 Larus do.

515 Head & neck of gulls gets pure white in summer

525 (Larus) Head & neck streaks with brown in winter, in summer, pure white

584 Gavia in winter head light coloured, in summer generally deep-grey, brown or black.

622 Terns young mottled with grey.

626 666} Terns Head black in summer & other cases

(I may use gulls & terns as an instance of the young in the fine plumage & of the adults of both sexes in the winter resembling each other to a large extent; & differing from the adults in summer.)

Macgillivray Vol. V

[49v]

p. 7. (QQ) Blue Thrush Ibis

8    (O)

8    (P)

10    (M. M)

(Australian p 10)

10    (S S) [illeg]

11. (U)  

Some good facts on nesting

p. 9 Monarcha variata: beautiful sexes alike open nest

(Icterus speciosus) [exellent] open nest but sexes different description

Macgillivray, William. 1837-1852. A history of British birds. 5 vols. London: Scott, Webster & Geary. CUL-DAR.LIB.402 vol. 1 PDF vol. 2 PDF vol. 3 PDF vol. 4 PDF vol. 5 link PDF Darwin cited this in Descent 2: 228-9, n54: "On Larus, Gavia, and Sterna, see Macgillivray, 'Hist. Brit. Birds,' vol. v. p. 515, 584, 626."