tT 
Table II - Index to Brood Production on Two Sample Areas 
Location 
Minto Flats 
Area Surveyed Period of Methods of Index Broods Percent 
Year in Sq. Miles Survey Survey per Sq. Mi* Change 
1954 450 7/12-14 Aerial 6.22 + 31 
1953 450 7/18 Aerial 4.75 
Remarks: All supplementary observations indicate an increase of at least 
Fort Yukon 
Flats 
30 percent over last year. 
1954 24 7/12-17 Complete BL 4 - 28 
Ground Coverage 
1953 24 7/1-14 Partial 11. 6% 
Ground Coverage 
Remarks: Due to late nesting, scaup broods were not present at time of 1954 
survey. Apparent decrease may be attributable in part to 
population shifts and changes in survey methods. 
* Calculated potential late broods not included in data compared. 
** Scaup not hatched. 
*%** Corrected to omit scaup. 
AVMATS DIAIDVd 
