However, their reputation is only partially deserved. These birds become far more wary with dogs on the ground. Clearly, they evolved to avoid canids and big cats, not humans. If you want a sporting hunt for dusky grouse, a dog is all you need to make it interesting.

In 2006, taxonomists recognized distinct genetic and morphological variability in two major groups of blue grouse. They renamed the birds of the interior Rockies dusky grouse (Dendragapus obscurus), and named the occupants of the coastal mountains sooty grouse (Dendragapus fuliginosus). Within each species, multiple subspecies are recognized.  

Read more at projectupland.com.