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
Grouse concern" or "near threatened", but the greater and lesser prairie chicken are listed as "vulnerable" and the Gunnison grouse is listed as "endangered". Some subspecies, such as Attwater's prairie chicken and the Cantabrian capercaillie, and some national and regional populations are also in danger. The phenotypic difference between males and females is called sexual dimorphism. Male grouse tend to be larger than female grouse, which seems to hold true across all the species of grouse, with some difference within each species in terms of how drastic the size difference is. The hypothesis with the most supporting evidence for the evolution