[Behaviors time budget and daily rhythm of great bustard in breeding season].
The direct observation method was adopted to study the breeding behaviors time budget and daily rhythm of wild great bustard (Otis tarda) on the grassland of Southeast Keyouqianqi in Inner Mongolia Municipality during the period from April to July in 2000 and 2001. The results showed that the behaviors time budget of great bustard were regularly in some degree, and there exited differences between male and female. The behaviors changed with the changes of activity space, food conditions and breeding stages. During breeding prophase, great bustard spent its time mainly on feeding, relaxing, walking and observing, and the male and female spent 87% and 93% of the time on the 4 behaviors, respectively. The time budget and intensity of male and female changed greatly during the breeding anaphase. The great bustard had a daily rhythm on feeding, relaxing and displaying, and there were two peaks on feeding and displaying. The great bustard spent most time on relaxing.
Zhao
Jiang
J
School of Life Sciences, Jilin Normal University, Siping 136000, China.
Gao
Wei
W
Wan
Dongmei
D
Wang
Haitao
H
D000818:Animals; D001522:Behavior, Animal; D001717:Birds / Q000502:physiology*; D001947:Breeding; D002940:Circadian Rhythm; D005260:Female; D008297:Male