Right now most snakes are just emerging from the dens for short intervals to sun themselves and aren't moving too far away. If a guy stays away from those likely rock piles this time of the year, he'll probably never see one. But by June they'll be traveling and encounters will become more common and the snakes will be more aggressive than now. A good thing to avoid this time of the year when it is pretty warm is to let your dog chase rock chuck's and similar critters. Snakes like to den in the same type area that the rock chucks like. This rattler was a monster. The one looking at the lens is a normal sized snake. It's easy to see why they call them diamond heads.
My second encounter was with a little smaller snake. I'm not sure, but I think there were two snakes here also. After looking at the picture, I don't think the rattle and the snake belong together. Both places were southwest facing rocks with plenty of sun hitting the rocks all day.
The other common spring encounter is ticks. I'm tickled (get the pun) to report only finding one so far this year. It was on Conner and I understand he took one home also. His mom made the report back to me. Obviously, she wasn't excited to see one crawling up the wall where Conner had left his backpack. Jake hasn't had any on him that I could find. Usually by this time of the year I have pulled several dozens from the dogs although very few are embedded.
In my opinion, neither are worth keeping out of the mountains for, but are just worth being aware of. Just try and be aware of snaky looking areas and try and avoid them if possible and check your mutt for ticks the same as you do for cheat and cuts at the end of each trip and all well be well. Trust me, Ed.