66 



Case 232 — continued. 



Oval. The eggs of tlie Nightjar (75) have both ends equally 

 rounded, forming a true oval. 



Spherical. Nearly round or spherical eggs are characteristic 

 of the Owls and a few other groups. The eggs of birds of prey 

 approach this form. Examples shown are Tawny Owl (76), Barn 

 Owl (77), Kingfisher (78), Osprey (79), Merlin (80) and Sparrow 

 Hawk (81). 



