362 
PASSERIFORMES 
679. Mourning Warbler, la fauvette petit-deuil. Oporornis Philadelphia . 
L, 5-63. Much like Plate LXVIII B. A greenish warbler. Male: clear lemon-yellow 
below; whole head, neck, and breast bluish grey with semi-concealed black spots on 
breast and throat giving a fancied resemblance to crape, which suggests the common 
name. The female is similar, but the 
grey lighter and without the crape 
markings on breast, thus resembling 
the male of the Connecticut. Juveniles 
have the grey of the crown, etc., re- 
placed with the body green, and the 
yellow of the underparts extends up 
neck to throat, slightly modified by 
lighter and greyish tinges. 
Distinctions. The Mourning 
Warbler is almost identical with Mac- 
gillivray’s of the western prairie and 
mountain regions. Adult males are 
separable from it by the general even 
greyness of face without definite black 
in front of eye or white spots on the 
eyelids (Figure 453, compare with 
454). Juveniles or females are often 
inseparable from that species. Some- 
what similar to the Connecticut Warbler, adult males are separable from it by the 
crape-like black on the breast and the lack of white eye-ring (Compare with f igure 
452). Juveniles and females may have suggestions of eye-rings, but see that species 
for details. Any such bird with wing under 2-60 inches long is undoubtedly either Mourn- 
ing or Macgillivray’s, or perhaps Maryland Yellow-throat. 
Field Marks. A green ground warbler, bright yellow below' with even grey head (no 
black on face or white on eyelids) and crape-like black across breast. For juveniles the 
large amount of bright yellow underparts right to undertail- coverts, and greyish head. 
This species, like Macgillivray’s and the Connecticut Warblers, w'alks instead of hops. 
Some juveniles and females cannot be reliably separated from the above species in life. 
Nesting. On or near the ground in nest of strips of bark and other fibrous material, 
fined with hair. 
Distribution. Eastern North America. In Canada across the Dominion w r est to the 
Alberta foothills; north to the dense spruce forest. 
Figure 453 
Mourning Warbler (male); natural size. 
680. Macgillivray’s Warbler, tolmie’s w arbler, la fauvette des buissons. 
Oporornis tolmiei. L, 5*63. Plate LXVIII B. A greenish backed warbler; bright lemon- 
yellow below back to undertail-coverts. Head, neck, and breast bluish grey with black in 
front of eye; a conspicuous white spot on either eyelid, and breast covered with semi- 
concealed and coalescing black spots, producing a fancied resemblance to crape as in the 
Mourning Warbler. The female is simliar 
but duller and without the crape markings 
on breast or the black in front of eye. 
Juveniles have the grey of the crown, etc., 
replaced by the green of the body; and 
the yellow of the underparts extended up 
the neck to throat, slightly modified by 
fighter and greyish tinges. 
Distinctions. Because of geographical 
range likely to be confused only with the 
Mourning Warbler. Adult male separated 
from it by black face and white eyelid 
markings (Figure 454, compare with 
453). Females and juveniles may be in- 
distinguishable from that species. Except 
in northern Alberta, not likely to occur 
where the Connecticut Warbler does, but Figure 454 
for distinctions see that species. Macgillivray’s Warbler (male); 
natural size. 
