Daytime incubating behavior of 3 pair semi-captive crane and 3 pair wild Red-crowned Crane (Grus japonensis) was recorded from 05:00 to 18:00 hours for 18 day from April 9 to 26 in Zhalong Nature Reserve. The activity of each individual bird was recorded once every 5 minutes. The result showed that the semi-captive red-crowned crane and wild Red-crowned Crane exhibited the same behavioral pattern. In total behavior frequency, semi-captive red-crowned crane showed obviously higher frequency of breeding behavior (including mating, nest-building, incubating) than did the wild Red-crowned Crane, however, the semi-captive ones walked less than the wild crane. In the activity rhythm, the breeding behavior of semi-captive Red-crowned Crane was less fluctuated than the wild birds in each hour during one day. Due to human interference the semi-captive crane exhibited breeding behavior in a higher frequency than the wild birds (P<0.05). Based on the observation for individuals, significant difference was found in feeding behavior (P<0.05) and in the guarding behavior between the two group of crane (P<0.05).