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 There are a wide range of research activities still going on today and a wealth of published literature exists on all aspects of grouse biology. The red grouse may be infected by parasites and viruses which severely affect populations. Strongylosis or 'grouse disease' is caused by the strongyle worm, which induces damage and internal bleeding after burrowing into the cecum. This endoparasite is often eaten with the tops of young heather shoots and can lead to mortality and poor condition, including a decrease in the bird's ability to control the scent it emits. Louping ill virus is a flavivirus (RNA