Plate III 
Eggs of Meadowlark and Upland Plover 
Size of eggs in relation to condition of young birds when hatched. Note that, while 
the birds are of about the same size, the eggs of the Meadowlark, an altricial bird, are 
much smaller than those of the Upland Plover, a prsecocial bird. 
Eggs of Common Tern 
Collected in a small colony on an island in Shoal Lake, Man., to show variation in 
color and pattern. 
