Fig. 



Young Horned Grebes on their nest, Obliterative shading and specialized ground-picturing patterns. [Cf. Fig. 77.1 



Photographed from life hy Herbert K. Job. 



Fig. 81. Baby Woodcock (PMoAeia mmor). Picture-pattern, based on counter-shading. Notice, here and in Fig 82 Babv Wnodraft 



the next figure, the perfect picturing by these young birds' patterns ot dark holes and lighted details. (PUlohela minor). [Ct. Fig. 81 1 



Photoeraphed from life by E. G. Tabor. Photographed from life by E.G.Tabor. 



