Behavior of overwintering, artificially reared greylag geese (Anser anser)
To further understand the behavioral rhythm of artificially reared greylag geese (Anser anser) during the overwintering period,the behavior sampling method was used to survey six behaviors:foraging,moving,observing,resting state,washing feathers,and communicating,of geese reared on the eastern side of Dongting Lake.In addition,during the survey process,20 behaviors were described with the duration time for each behavior recorded and analyzed.12 greylag geese were observed and the observation happened 8:00 to 16:00 every day in the experiment.Results showed that the longest duration time for each behavior differed with the longest duration time of rest being 20 min;whereas,communication behavior was only 16 s.The shortest duration time for each behavior was almost the same lasting from 3 to 10 s,but there were fluctuations for all behaviors.Greylag goose behavioral rhythm during overwintering indicated that feeding,being stationary,exercising,and cleaning were the major behaviors.The proportion of time for being stationary was more than the others with peaks always occurring in the morning and evening.Frequency of the foraging behavior was determined by feeding with two peaks in a day.During the foraging process,many behaviors were observed,such as the vigilance behavior.This research would be useful for rearing and succoring greylag geese that were overwintering.