During winter, the juveniles of B. c. minima mainly eat alfalfa and winter wheat while the adult birds feed mostly on barley. In urban areas, Canada geese will pick food from garbage bins or accept it from humans. Generally speaking, the daily ration of geese should contain up to 700 gra...
Terrestrial snails can drown in too much water, so if you provide a water bowl, it should be shallow and not easily tipped when crawled upon by the snail. Can snails hear? The sensory organs of gastropods (snails and slugs) include olfactory organs, eyes, statocysts and mechanoreceptors. ...
(Nakanishi et al., unpublished data). However, aerial insecticide application may have lethal effects across Odonata taxa. If larvae were present in conventional paddy fields during aerial application, it is unlikely that they would survive once water levels are reduced during midseason drainage (...
蛙类Frogs 蛙类大约有4800种,绝大部分生活在水中,也有生活在雨林潮湿环境的树上的。蛙类最小的只有50毫米(http:\/\/baike.baidu\/view\/92333.htm"\t"_blank),只相当一个人的大拇指长,大的有300毫米(一尺多长)。有的蛙类皮肤(http:\/\/baike....