Same raven as the pellet caster. I think the raven looks like a pine cone all fluffed out like that. I think Yellowstone may be the wrong place to find pine cones that large. I'm not a botanist I don't know a whole lot about trees...just that lodgepole pines are everywhere in Yellowstone...but that's just because someone told me. There's actually a pine cone (I think) next to the raven's tail.
(It is my goal in Yellowstone to cause a raven jam!!!)
Common raven Corvus corax Yellowstone National Park