20 TERMINOLOGY CHAP. 
onwards prior to leaving our shores, but after that they may 
possibly betake themselves aloft to continue their journey. 
The speed at which Birds travel during Migration is a matter 
on which very diverse opinions have been and are held; but the 
highest estimates, such as those of the late Herr Gitke (who 
crown (verlex) lore 
yorbit } forehead (/roxs) 
hind-head (occiput) wf nostril 
: “S mo” "cere 
car coverts, auriculars, ~*~ “ridge (culmen) 
r \.----maxilla 
-- cutting edges (Coma) 
hind-neck (cervix) lg > .\smandible 
\, “gonys 
back (dorsum) . “throat (gu/a) 
S ».. "> lesser coverts 
“fore-neck (jxeulun) 
-- median coverts 
--- bastard wing (2/udz) 
scapulars----~ 
IY 
rump (uvopyginz)... I, IMG Yo) 
AGE 
uppertail coverts.../f/ (7 Yip 
; belly (2ddomen) 
/ 
ff - greater coverts 
Va “-breast (fectus) 
~~~ secondaries (vemiges sécunday;i) 
‘@__._.“metatarsus. 
_-outer or 4th toe 
y 
ff ‘under tail-coverts and 
oy / vent (crissum) ) 
hind-toe- (Aa lx) “8 
uy 
i. . . . . oe ay! 
‘primaries (vswzges primarzi ) | \ 
ii 
h\{\." 
tail 
veclrices Y 
SS 
Fic. 6.—A Falcon. To shew the nomenclature of the external parts. 
would allow even 150 miles an hour), can scarcely be otherwise 
than exaggerations; for there is no evidence of any but exceptional 
performances at such rates, and there is really no reason to suppose 
that Birds can fly faster at a higher elevation than at a lower. 
Terminology.—The annexed figure explains the nomenclature 
of most of the outward parts of a Bird, but some further explana- 
tions may be given, as below :— 
