MO342 (Sam Parks Photography) Tags: alcesalcesshirasi gtnp gye grandtetonnationalpark greateryellowstoneecosystem jacksonhole nps northamerica parkservice rockies rockymountains shirasmoose tetonrange usa unitedstatesofamerica wyoming animal antlers autumn biggame breedingseason cervid cervidae cervine cottonwoodtrees cow fall fallcolor female foliage habitat herbivore herbivorous hoof hoofedmammal hooved hooves large male mammal matingseason meadow nature rut rutting trophybull ungulate valley wild wildlife woods