92 
Table VI. - Number of Broods by Age Classes on the Elkhorn Study Area - 
August 3, 1953 -~ Including Coot 



Transect Age Classes Broody Total For © Broods Per 
Sepments | I II LII Hen Transect Square Mile 
A 34 25 a3 4 86 68.8 
B 23 ll 14 7 55 44.0 
C 17 10 15 l 43 34.4 
D 5 5 6 0 16 12.8 

Total 79 51 58 12 200 40.0 
% in each 
Age Class 39.5 25.5 29.0 6 100 

Table VII. - Average Water Fluctuations of Pothole Types, by Transect Segments, 
on the Elkhorn Study Area during the Summer of 1953 * 

Area Permanency Class 
B Type C Type E Type 
Transect #Water High Final # Water High Final #Water High Final 
Segment Areas (In) (In) Areas (In) (In) Areas (In) (In) 
A 15 44.12 -2.51 7 +3.78 -3.71 © - = 
B ll +4.25 -2.50 12 44.58 -6,85 - - - 
C ll +4.73 -3.25 4 44.44 -8.75 2 +6.87 -3.37 
D 12 +2.89 -6,.83 7 42.71 -11. 64 l +8.0 0 
* These readings were obtained from 82 temporary water-gaupes which 
were installed in the 3 water-permanency areas early in May. The 
original reading, at the time of installation of the gauges, was used 
as zero; the high reading was obtained after the rains in early June 
(June 8th); the final reading (low) was obtained by August 3rd (between 
July 30 and August 3). 
Table VIII. - Occupancy and Loss of Water Areas During July and August on the 
Elkhorn Study Area, 1953 
Transect Occupied Unoccupied Dry Original # 
Segment July 24* Aug. 3 July 24* Aug. 3 July 24* Aug. 3 on Segment 
A 36 38 52 42 5 13 93 
B 21 28 48 33 S| 13 74 
G 19 18 28 21 7 15 54 
D- 203 13 61 49 28 50 112 
Total 99 97 189 145 45 91 333 
Percent of 
Total 29.7 2g, I 56.7 43.5 13.1 27.3 
sc pe i ef PS SS 
* The figures appearing under the date of July 24 were conditions 
in the field at the completion of the first brood count on July 16, 1953. 
