166 
Table VII. - Canada Goose Breeding Ground Inventory - 1953 
Non-Breeding Breeding Birds Total 
Drainage Pairs Singles * in groups’ Birds 
Bear River 105 40 79 369 
Snake River 112 50 182 506 
Yellowstone National 
Park *** 54 29 14 180 
North Platte 125 86 87 509 
Green River 72 46. 100 336 
Total 468 251 462 1,900 
Adjusted Totals **** 384 335 462 1,900 
Density of 
geese per Mi. 
of stream ** 
* To obtain total birds, geese in this column were doubled. 
*%* Stream length determined by 10-mile straight line segments in 
nesting habitat. 
**xx Estimated 75 percent coverage of nesting habitat, 
**** Number of breeding singles adjusted upward on basis of 25 percent 
nest mortality at time of taking May inventory. 
7.0 
5.3 
~~ Ww 
« oe 8 
Ww 0 © 
Table VIII. - Comparison of Geese observed by Aerial Count on Identical Areas 
in May and July, 1953 
May July 
Drainage Pairs Singles * Groups Young Total Pairs ** Singles Groups Young Total 
* ** Green River 30 28 72 16 204 23 - - 91 137 
***x Bear River 71 36 57 271 #17 - 3 78 115 
**#*x Snake River 68 34 170 374 7 - 120 27 161 
**eE N, Platte 125 86 87 509 27 1 1,535 108 1,698 
River 
Total 294 184 386 | 16 1,358 74 1 1,658 304 2,111 
* A single goose was counted as a mated pair in May. 
** Included pairs with broods, 
*** Sample of drainage. 
**kxx Entire drainage, 
