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. 



4H > 



EGGS OF COMMON TERN 



Collected in a small colony on an island in Shoal Lake, Man., to show variation in 

 color and pattern. 



