Where is the egg in Petpet Park

You need to see Mellele and she will tell you to go to Farmer Grenn. ( she is in Grenns Farm) Farmer Grenn says to speak to J.R. about Finian but that is all I know. I cant figure out where J.R. is. That is the best answer i have. Regular eggs though are in Famer Grenns barn!
J.R. is next to the huge blue pumpkin.