20 
6. A Class II brood of six. July 3 - at pothole No. 29. July 5 = at 
pothole No. 31. July 6 = at pothole No. 34. July 12 - Last seen. Travel - 
0.2 niles in 9 days. 
7e A Class I brood of six. July 3.- at pothole No. 13. July 5 & at 
pothole No. 28. July 6 - at pothole No. 33. July 14 = at pothole No. 35 
(last seen). Travel - 0.) miles in 11 days (0.32 miles in 3 days; 0.2) 
miles in 1 day). 
8. A Class II brood of five. July 7 =< at pothole No. 22. July lh - 
at pothole No. 21, July 16 = at pothole No. 2h. July 22 ~ at pothole No. o. 
August 2 - at pothole No. 3k. August 5 - Last seen. Travel - 0,58 miles in 
29 days. 
These 10 broods traveled overland a total of 2.88 miles in the 218 days 
that they were observed for an average of 0.013 miles a day. No broods of this 
species were known to use one pothole for more than 23 days (less than half of 
the probable period of preflight development). 
Redhead -= A brood of four newly hatched redheads dyed with Croceine 
scarlet was seen July 2 at the nest on the west end of the type B2 pothole 
south of No. 15. On July li the hen and three marked young were seen on 
pothole No. 35, and on August 12 it was seen on pothole No, 36, This brood 
traveled at least 0.75 miles in 58 days. 
Two ummarked redhead broods were observed in their movements as outlined 
below: 
1. A Class I brood of eight. July 1h = seen at pothole No. 3h. July 19 
seen at pothole No. 33. August 15 - at pothole No. 35 (not seen again), 
Travel - 0,32 miles in 32 days. 
2. <A Class If brood of nine. August 1) - at pothole No. 3h. August 15 - 
at pothole No. 35. August 18 - hen last seen. August 22 - brood last seen. 
Travel - 0.07 miles in 8 days. 
These three broods were observed to travel a total of 1.1) miles in 96 
days for an average of 0,012 miles a day. No redhead broods were known to 
remain in one pothole longer than 31 days. 
Baldpate -~ A nest of baldpate just northwest of pothole No. 33 containing 
nine normal eggs and one midget egg was colored with Ponceau SX on June 22, 
When revisited on July 8, the nest was listed as destroyed. However, on July 
10, the well-colored brood of six young was seen on pothole No. 36 and was 
estimated to have hatched on July 5. For some reason, this brood rejected 
pothole No. 33 which was heavily used by other broods, including one baldpate, 
and moved 0,16 miles farther to pothole No. 36. Only the feigning hen was 
seen to indicate the presence of the brood from July 28 until August 10 when 
the young no longer showed any color. However, the constant presence of the 
hen indicated that the brood had not moved, On August 21, the hen was still 
with the young which appeared. ready to fly at the age of 7 days. 
This brood moved overland at least 0.2 miles. 
Three unmarked baldpate broods were seen to move overlam as shown below: 
1. A Class I brood of 10. July 1; - found on pothole No. 0. July 22 - 
found on pothole No. 39. (No good counts after this date.) August 16 = hen 
