600 Mr. C, F. 'SI. Swynnerton un 



the white of a fowl's egg, hut readily ate its yolk, licking it 

 clean ; licked once or twice into the white of a Wren's egg 

 offered similarly in a spoon, but quickly desisted and 

 withdrew, and, sometimes smelling it (when I pressed it on 

 him), refused it as persistently as he had already done the 

 whites of the fowl's and duck's. I then offered the broken 

 shell of the Wren's egg, containing now only the yolk, and 

 he merely licked it once and withdrew. I then turned the 

 yolk out into a spoon and it was smelt and eaten, though 

 just possibly, I thought, with not quite the appreciatiou 

 shown for the other two. 



Order of preference : (1) Spotted Flycatcher, Grey Wag- 

 tail, and yolks of Fowl's, Duck's, and Wren's eggs. (2) 

 Great Tit, Pied Wagtail, and whites of Fowl's, Duck's, and 

 Wren's eggs. 



Expt. 22. July 21, early afternoon. — Smelt and refused 

 Pied Wagtail, Great Tit, and Wren, but readily ate a duck's 

 egg with the yolk mixed up with the white, also a fowl's 

 egg similarly prepared. I did not let him eat a great deal, 

 but he seemed quite prepared to. He then smelt and 

 refused a fowl's egg in which the relative positions of 

 white and yolk were normal, but again readily ate the other, 

 in which they were mixed, also the duck's ; smelt and 

 refused the Wren's, Pied Wagtail's, and Great Tit's, also, 

 persistently, a fresh Hedge-Sparrow's, but ate a Spotted 

 Flycatcher's; again smelt and persistently refused the 

 Hedge-Sparrow's and the others already refused, but smelt 

 and ate with real eagerness a House-Sparrow's egg, repeated 

 his refusals, licked a Grey Wagtail's egg from a crack in 

 which the white was flowing, but desisted almost at once 

 and refused it, but ate with as much eagerness as the 

 Sparrow's a not quite fresh Bullfinch's egg. 



Order of preference : House-Sparrow and Bullfinch (latter 

 not quite fresh) much more eagerly than (2) Duck and 

 Fowl, with yolk exposed, and Spotted Flycatcher. (3) 

 F^owl's egg with yolk protected by the albumen. Grey and 

 Pied Wagtails, Great Tit, Hedge-Sparrow, Wren. Of these 



