USS Grouse (AMS-15) USS Grouse (AMS-15) The USS "Grouse" (AMS-15/YMS-321) was a built for the United States Navy during World War II. The ship was laid down as "YMS-321" on 29 August 1942 by Al Larson Boat Shop Inc. of Terminal Island, California, launched 20 February 1943, sponsored by Mrs. H. Doty. The ship was completed and commissioned as "USS YMS-321", 25 October 1943 with Lt. (j.g.) Newman in command. After shakedown and patrol out of San Diego, California, "YMS-321" sailed for Pearl Harbor 21 April 1944, arriving 1 May. A month later she sailed for sweeping and patrol duties in the Guam-Saipan-Tinian
Red grouse recover. The main driver of this cyclic pattern is thought to be the parasitic nematode worm "Trichostrongylus tenuis". However, in his book, V. C. Wynne-Edwards suggests that the primary reason for mortality in grouse population is homeostasis depending largely on food availability and that the 'Grouse disease', due to the parasitic worm "Trichostrongylus tenuis" is a mistaken diagnosis of the after effects of social exclusion. The red grouse is endemic to the British Isles; it has developed in isolation from other subspecies of the willow ptarmigan which are widespread in northern parts of Eurasia and North America. It is found