Pl.ATE 34 



Left: Colony of northwest coast lierons, Si.inlry Park, Vancouver, RriUsh 

 Columbia, June (i, 1022, presentefl 1)\' J. A. Munro, ii\ cnurtesy uf the Cana- 

 dian National Parks Braucili, referred to on page 115. 



Kiglit: Nest of double-crested cormorant in foreground and nest of Treganza 

 h(>ron in background, Bird Island, Great 8alt Lake, Utah, presenled by A. 

 O. Treganza, referred to on page 124. 



419 



