U. S. NATIONAL MUSEUM 



BULLETIN 162 PLATE 59 



. . - 



Heath Hen in Initial Stage of Booming 



April 12, 1923. 



Heath Hen at Climax of Booming Performance 



March 29, 1927. Both photographs taken by Dr. A. 0. Gross, Marthas Vineyard, Mass., and pre- 

 sented by him. Referred to on page 271. 



