Bui. 39, Biological Survey, U. S. Dept. of Agricultu 



Plate III. 



Work of Pileated Woodpecker; Bleached Walnut Wood. 



[1. Eole made in canoe cedar ( Thuja plicata) by pileated woodpecker in search of insects. 2, Healed 

 excavation in same wood, outside view. 3, Same, inside view. 4 and 5, Excavations by pileated 

 woodpecker in dead deciduous trees, Vilas Countv, Wis. By H. S. Barber. 6, Bleached streak in 

 black walnut, caused by woodpecker's food excavation.] 



