Behavior And Nest Selection Of Black-headed Gull During Breeding Season In Qixinghe National Nature Reserve, Heilongjiang Province, China

From April to June in 2013 and 2014, the breeding behavior of Black-headed Gull was studied in Qixinghe National Nature Reserve, Heilongjiang Province. Approaches as Scan Sampling, Focal Animal Sampling and All Occurrences Sampling are used in the observation and register. The results showed:In the breeding season, it occurs most that female black-headed gulls hatching behavior as 55.14% in all behavior acts which followed by foraging behavior as 12.46%, migratory behavior as 9.50%, the rationale plume behavior as 8.26%, habitat quiet behavior 8.17%, vigilance behavior as 3.24%, and behavior Battle 1.51%. Black-headed Gull hatching males’behavior is the highest of all behavior but it is lower than female behavior hatch Black-headed Gull. Other behavior acts in order as high to low were foraging behavior 21.33%, tour walking behavior 13.09%, habitat quiet behavior 13.02%, science plume behavior 10.18%, vigilance behavior 5.22%, and battle behavior 3.27%.Breeding season in proceeding phase that both male and female Black-headed Gull behaviors which are foraging behavior, alarm behavior, habitat migration behavior, static behavior, feather behavior, courtship behavior have no prominent difference (P>0.05). Battle behavior is indictable difference (P<0.05). It was significantly different that in incubation of breeding behavior of male and female Black-headed Gull, foraging behavior, alarm behavior, habitat migration behavior, static behavior, feather behavior, and Egg-turning behavior (P>0.05). Double eggs behavior extremely difference (P<0.01). Incubation medium male and female Black-headed Gull habitat migration behavior, static behavior, feather behavior, fighting behavior, behavior and Egg-turning behavior was not visually different (P>0.05). Foraging behavior, breeding behavior and Egg-turning behavior are great difference (P<0.01). Habitat in post period, incubation male and female Black-headed Gull breed eggs behavior and static behavior was not significant (P>0.05). And breeding behavior, behavior Egg-turning, foraging behavior, alarm behavior, travel behavior, feather behavior, fighting behavior and nest behavior evidently different (P<0.01). In incubation period, female Black-headed Gull foraging behavior, alarm behavior, habitat migration behavior, static behavior, feather behavior, and battle behavior of breeding eggs performs no significant difference (P>0.05). The hatch act is extremely remarkable difference (P<0.01). Incubation period of male black-headed gull’s alert behavior, feather behavior, egg-breeding behavior differences was not obvious (P>0.05). The static habitat behavior and egg breeding behavior difference is obvious (P<0.05). Hatch act, foraging behavior, fighting behavior and nest behavior difference is distinct (P<0.01).The determinant factors of Black-headed Gull breeding habitat selection can be ordered as primary to secondary:vegetation height, vegetation density, vegetation diameter, Ming surface area, from open water distance, depth. Black-headed Gull selective breeding habitat is a major factor in vegetation height, vegetation density and vegetation diameter.