100 



GREEN HERON. 



ried it some distance by the legs, which were at first yellow; but 

 on reaching home, I perceived to my surprise that they were red. 

 On letting the bird remain some time undisturbed, they again be- 

 came yellow, and I then discovered that the action of the hand had 

 brought a flow of blood into them and produced the change of co- 

 lor. I have remarked the same in those of the Night Heron. 



