126 The Bird 
thin affair, narrow throughout its whole length and so 
thickly bordered with a deep, delicate fringe that it 
bears a decided resemblance to a feather. 
Fic 98.—Feather-like tongue of Toco Toucan. 
The tongue of a flamingo is thick and fleshy, filling 
the entire cavity of the lower mandible and in shape 
reflecting its crookedness. The upper edges of the man- 
»s, 
Fre. 99.—-Tongue of Flamingo within lower mandible (natural position). 
dible approach each other so closely that they perma- 
nently inclose the tongue, motion being only possible in 
