—_ 
ARDEIDA:: HERONS. 655 
in vogue have been successively detached from Ardea, the typical one, with which many 
of them should be reunited. The ‘‘ Night Herons” (Nyctiardea and Nycterodius) ditter some- 
SS 
= 
oe 
Fic. 456. — Herons, idealized from Ardea cinerea. (From Michelet.) 
what in shortness and especially stoutness of bill; while the Bitterns (Botawrus and Ardetta), 
the South American genera Tigrisoma, Zebrilus, and a few others, are still better marked. 
