I have found that Easter eggs more likely spawn on ground that is less traveled. I tested this in the mountains near snowtown.

I just spent 5 days doing this egg quest and just finished it. This was really fun, way better than the previous ones and hopefully this or something like this can be repeated next year.

5 days is too much of a dedication...

Maybe this is because since less people travel there, the eggs are picked up less often?

Still working on my collection >.< 6 more. If it wasnt for the fact that I liked the prize I never would have done this. Way too much work.

Nope, that makes far too much sense.

Anyone got 36, 38, or 40 they could lend me in-game? My name is Aaron and i'm in Regime

Here's another way to see all the eggs, thanks to Mike for posting!