Falcipennis
Falcipennis is a genus of birds in the grouse family that comprises three very similar species:
| Image | Name | Common name | Distribution |
| Falcipennis falcipennis | Siberian grouse | eastern Russia, China | |
| Falcipennis canadensis | Spruce grouse | United States, in Alaska, northern New England, northern Michigan, northeastern Minnesota, and the montane coniferous forests of Montana, Idaho, Maine, Oregon, and Washington. Canada | |
| Falcipennis franklinii | Franklin's grouse | British Columbia and the Rocky Mountains |
All spruce grouse species inhabit northern coniferous forests and live on a diet of conifer needles during the winter. They have breeding systems with dispersed male territories, intermediate between the leks of some grouse and the monogamy of others.