Have you ever been to any of the state parks?
Which state parks interest you?  I enjoy unlimited access to the natural beauty in every state.
I really like Yellowstone but agree that there are many parks in each state to see.
An annual pass to the federal park system is a good value if you like to travel.
Yes, we got one a couple of years ago. Do you have a favorite place to go?
I enjoy seeing the prairie dogs in Theodor Roosevelt park.  Do you like prairie dog watching?
I love them and have quite a few photos from my various trips. Guess I should check that park out on my next trip.
The Colorado Parks system has openings for volunteers in the raptor monitoring program.  It is an amazing experience to watch such a creature.
Wow, that would be a unique experience! Thanks for the information. 
If you have ever been to the Main Coastal Islands National Wildlife refuge you might have seen an Atlantic puffin.  They are funny looking fellows.
I've seen pictures of puffins, adorable. I look forward to heading up to that area this year. You really have some great ideas for me, thanks.