Dave, I can't say I'm loving the blurred rocks in the FG but I'm thinking when the snow hits...you'll have some amazing images! You're doing a great job of pinpointing the focus; I'd also like to see you go a little deeper and include a bit more of the area in front of the bird as well.
And are you sure that's a sparrow? Got the breast of a house finch to me but I'm not sure about that. HA, pose and details on the bird are very strong!
Dave, Nice job getting low. I wouldn't crop any off the bottom if it were mine. It might end up looking too tight. Sharpness looks good. Would like to see it on a perch or a single rock. Nice job w/ this.