The Cassin r \i 
The t'hci :t ;f> 1 ; ■ -ion HO’ 
deal of < ■ . .mi tmii-h <>f 
it—ci'ili ii die h ‘ Fijir 
tcri-div and o;, rtmn 
bird ha a k>! * vibtani oil ■. 
meet '•;< whether’ol frtftviiy w< 
of a rival. It' tit n*r..;m . -; - 
excitable bin!. > iS> him aa 
busybody, if you .-ill. lie i a 
as ' say. of ! mi i::\ ah i< a; 
■. flick, uttered with a good 
* we hesitate to syllabize 
by her wick, a perfectly charac- 
; call, or challenge note, the 
. mu! this roll, rendered staccato 
i i ■ is used on every occasion of 
■■ a mate, or of execration at sight 
:mt to be an emotional and highly 
Sir ( lackchops, and general 
•ciess a very good fellow, beloved, 
No. 106 
Cassin Kingbird 
Tyrannus vociferans Swainson. 
it .• Head and neck above and on sides dark ashy gray 
led crown-patch orange-red, or scarlet; space about 
biack: sides of neck shading into lighter ashy gray 
v; n ;|: I -,i ; ; d< h .r ,, cb 
Cassin’s Kingbird 
About 3 ^ life size ■- S r "> 
• , . . „ , 
From a water-color painting by Allan Brooks 
seh ;r. edging; first five primaries sharply and decreas- 
the inner v.eb; the tip of the wing formed by 
•he second and fourth. Bill and feet black¬ 
leg crown-patch reduced and primaries scarcely or 
not r: n~pi.ruously emargii.ate. Yen no Urh are paler, have no crown-patch, and are 
without suggestion of emargination on wings. Length (skin) 208 (8.19); wing 132.7 
?..22.i-, tail 93.1 (3.66); bill 9.7 (.38): tarsus 9.2 (.36). 
Recognition Marks. —Tow hoc size; ashy gray and yellow coloration; throat, 
n ••• . ai racing with gray; and edge of rail not definitely white, as contrasted with 
A O I. . No. 448 
Description.- - Adult 
»»« utrai gray); a partially co 
eye and auriculars darker, > 
•light neutral gray) of breast 
white; ashy of breast shadin 
ycilow) of remaining untierpa 
gray) washed with olive 
coverts and tail; tip of 
while. wings fuscous with tiadi as-ic 
ingly but not extensively emarginatc 
the third primary, closely supported 
i'll. Adult female: Like male, but 
Nesting. Nest and Eggs individually indistinguishable from those of T. ver- 
The eggs are perhaps slightly warmer, more pinkish in tone. Av, of 80 
t-i" <■■■ :u i lie collection:;- of the Museum of Comparative Oology: 22.8 x 17.5 
•-. ■; S.xm.-mes 20.1.-25,4 ■••' 16.5-19.8 (.81-1.00 by .65-.7S). Season: April- 
June v.ne or two broods. 
f.i-i! c.tj Range.—Western 'North America. Breeds in Sonoran zones north 
tv v .1 1 Li -ico s .urliem Wyoming, east to eastern Colorado and western 
* • •' Iii.mc.m). Winters from southern California and northern Mexico 
to L’.'-.'r c : ; i. r northern California and in Oregon. 
8 *8 
