After Chester takes off to ride at the front of the herd, a drover is seen going after a stray that is behind Matt and Quince. After a cut to a close-up from about the same angle the drover and the cow are gone.
Quince tells the Marshal that breakfast is served at 4:00. When the cookie wakes the drovers for breakfast it's after daylight, yet even on the longest day of the year the sun doesn't rise in Kansas until after 6:00 a.m.