ZOOLOGICAL SOCIETY BULLETIN. 



751 



FEEDING TIME, WILD-FOWL POND. 



ducks are generally very shy, and rarely become 

 so tame as most others. 



Of all our guests this year the most interest- 

 ing are two female baldpates or American wid- 

 geon. These birds appeared on the Wild-Fowl 

 Pond in the fall of 1910, and seem sufficiently 

 contented to make it a permanent home. One 

 has formed an alliance with a male of the close- 

 ly-related European widgeon, and it would not 

 be surprising if she should forego the vicissi- 

 tudes of the vernal northward journey. 



The tameness of the wood duck and widgeon 



is most surprising while they are on the familiar 

 pond and visitors are on their accustomed side 

 of the guard-rail. These wild birds compete 

 for proffered morsels on more than equal terms 

 with the pinioned mallards, their full wings al- 

 lowing them to move with much greater rapidity 

 than their heavier rivals. But at the slightest 

 attempt at further familiarity they promptly 

 scuttle for the diminutive island, where over- 

 hanging bushes hide them from prying eyes. 



L. S. C. 



WORK OF THE HICKORY BARK BORER. 



The picture on the left shows the holes in the bark made by the emerging adult insects; that on the right shows the inner side 

 of the bark with the characteristic vertical tunnels of the female, in which the eggs are deposited in tiny niches, and the 

 lateral larval galleries made in the process of feeding. The insects live on the cambial layer of the tree. Members of the 

 Society owning hickory trees should examine them carefully as the insect is difficult of detection and causes the death of 

 every tree it attacks. 



