From 26 March to 2 August 2003, both the time budget and the diurnal rhythm of behavior of breeding Black-necked Cranes (Grus nigricollis) were studied at Ruoergai Wetlands National Natural Reserve, Sichuan Province, China. The breeding season was divided into three phases: Pre-reproduction, Incubation and Chick-rearing periods. Foraging behavior was the most prevalent during the breeding season, accounting for 45% of the diurnal time budget, followed by breeding activity (28%), locomotion (10%), maintenance (9%), alert (7%), resting (1%) and “other behavior” including excretion, calling and antagonism (0.6%). During the three breeding phases, there were significant differences in the time budget of all behavior types except for locomotion and “other behavior”. In terms of frequency of events, alert behavior was the highest, occurring 43 times per hour, followed by foraging (31), maintenance (17), locomotion (11), breeding activity (5), “other behavior” (1) and resting (0.7). During the three breeding phases, there were significant differences in the frequency of various behavior types except for “other behavior”. During the day, the rhythm of different behavior types varied according to time.
You have requested a machine translation of selected content from our databases. This functionality is provided solely for your convenience and is in no way intended to replace human translation. Neither BioOne nor the owners and publishers of the content make, and they explicitly disclaim, any express or implied representations or warranties of any kind, including, without limitation, representations and warranties as to the functionality of the translation feature or the accuracy or completeness of the translations.
Translations are not retained in our system. Your use of this feature and the translations is subject to all use restrictions contained in the Terms and Conditions of Use of the BioOne website.
Vol. 30 • No. 1