34 THE O. & O.-SEMI-ANNUAL. 
1.05x.71. No. 2. Same ground, blotched with chestnut and obscure 
purplish. Blotches about .15x.15, mostly on crown; 1.03x.72. 
No. 3. In this egg the lilac predominates. Large spots of it 
and brown mostly on crown,t.0ox.70. No. 4 Spotted and blotched 
with purplish and brown; incomplete ring; 1.06x.71 No. 5. 
Spotted and blotched all over with purplish and chestnut ; 
1.00x.72. Ground color in all the eggs is the same—pale blue. 
They are pretty eggs but not typical. 
What I consider a typical set may be described as follows: five 
eggs collected by G. M. ; incubation “‘advanced.” Nest of sticks, 
Indian tobacco, etc., lined with rootlets and hair. No. 1, bluish- 
green, with small spots of reddish and lilac distributed uniformly 
over the surface. A few larger spots form a ring around crown ; 
1.06x.71. No 2, bluish-green, with large confused spots of 
reddish and obscure lilac distributed uniformly ; 1.01x.70. No. 
3, same coloration as No. 1; .99x.71. No. 4, spotted less thickly 
and with more purplish than No. 3; .99x71. No. 5, bluish- 
green, with large and small spots of reddish and lilac, mostly on 
large half of egg, 1-01x.71. Average size of ten eggs, 1.02Ki715 
Mockingbirds’ eggs are very variable, being found any color 
from gray with a solid ring of red, to bright blue with bold spots 
of dark brown and chestnut, or an almost uniform brownish, or 
only freckled with reddish, but it is only in a large series that 
such varieties are found. I know of one so-called ‘:runt” Mock- 
ingbird’s egg which is just the size and color of a Field Sparrow’s 
egg. Ido not think that the eggs differ in size or color according 
to lateness of season, but I do believe that the second brood, in 
June, consists of four, while five are frequently found earlier in 
the season. ‘The number of eggs is usually four or five. I have 
never taken a larger set than the latter number, but sets of six. 
are sometimes found. I have found a few sets of three, but I 
suspect that one or more eggs had been removed. 
Dwarf Cowbirds’ eggs (AZolothrus ater obscurus) are but sel- 
dom found in the ‘‘Mocker’s” nest, but this year several were 
found. They were also found in other unusual places, nests of 
Cardinal Tanager, etc. 
The natural enemies of the five species are the usual enemies 
of birds viz. the larger Falcontde, small carnivorous mammals, 
and many species of snakes. No special enemies observed. 
