Brood Break-up, Dispersal, Mobility, and Mortality of Juvenile Prairie Chickens

Abstract
During a 7-yr study of greater praire chickens (Tympanuchus cupido pinnatus) in Kansas [USA], 24 juveniles were captured, banded and fitted with radio transmitters. Their monthly ranges and day-to-day movements showed that they moved more than adults during late autumn and during the spring booming season. They also suffered heavier mortality than adults, especially during the fall dispersal. Broods broke up before dispersing, and both activities occurred in late Aug.-Sep. Mortality was about 56% for broods under 10 wk of age, and less thereafter.

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