I agree - a small reduction in saturation or vibrance (primarily in the green) and you're there. They look very good indeed.
EDIT: I hope you don't mind, but I downloaded your original of #1 and did some quick adjustments in Lightroom: Whites (-5), Clarity (+12), Vibrance (+10), Tone Curve / Shadows (-5), Luminance (Yellow: -31, Green: -44, Blue: -11), Rotate (+1.6 to the right). Then a slight Crop to the left and bottom, and Spot Removal to get rid of the piece of white litter and what looked like a birds nest in one of the trees...
EDIT 2: In hindsight, I might have overdone the rotation a little... +1.1 looks a bit better, but I won't post it again
This, as you say, is all fun. You can go mad tweaking an image!