EGRETS. 209 



168. BLACK-CROWNED NIGHT HERON. 



Larger, 26, and stouter; ash-white; top 

 of head and back black; bill, dark; feet, 

 yellow; slender plume on back of head, 

 white. Young, brown, white streaked, figs. 

 153 and 154, small fig., young. Very com- 

 mon, breeding in large heronry. Flight 

 and wing-beats, slow. Cry a harsh, abruptly 

 given quack uttered in flight \ and other 

 gutteral sounds best heard on the breeding 

 grounds. Social at all time. Although noc- 

 turnal, frequently feed by day, especially in 

 breeding season. Nests from March (Fla.) 

 to June (northern N. E.) 



169. YELLOW-CROWNED NIGHT 

 HERON. 



Smaller than last, 23; bill, thicker; 

 head and back plumed, darker above strekaed 

 with black especially on crown and sides of 

 head. Young, darker brown, narrowly 

 streaked with lighter. Cry. similar but not 

 as harsh and i less seldom given. Often 



