The robin - sized murrelet is on the endangered - species lists in both canada and the united states , primarily because logging is destroying its habitat 知更鸟大小的小海鸭已被加拿大和美国列入了濒危物种，这主要是由于伐木作业破坏了它们的栖息地。
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Walker , senior land use adviser to the british columbia ministry of environment , said british columbia listed only 4 of more than 700 vertebrate species in the province as endangered and another 41 , including the marbled murrelet , as at risk 他说，不列颠哥伦比亚仅把本省的700多种脊椎动物中的4种列为濒危的，另外把带大理石斑纹的小海鸭等41种列为处于危机之中的。
