Cook squirrel the same as rabbit. But it has to be a young one. Older ones need slow cooking in wine or a good stock. For anything that might be tough, try marinading in vinegar anr water overnight. rinse before cooking.
Had hoadgie once and it was good but never tried to cook it myself. They need to be wrapped in clay and cooked in the fire embers. then the skin comes off with the prickles easy.
Catch pheasant and partridge with raisins and a fish hook. you can catch squirrel this way but they tend to panic so you need to be near by. Never put out raisins and fish ooks overnight like the poachers do. as it leaves the catch all night in a traumatic state. If you want to catch a few pigeons for a pie or even rooks. then get some fresh yeast and roll in little balls and feed to them, wait half hour and just pick them up and wring their necks. Crow tastes awful. so be careful you dont mistake one for a rook. remember if you see a rook alone , it's a crow. and if you see a flock of crows they are rooks. LOL.
Dandelion leaves are better then spinage and so are sorrel. Dandelion roots roasted make excellent coffee substitute. Crab grass roots are very nutricious and are easy to gather. they taste a bit like potatoes. and in fact were eaten by the brits before taters came into the country. Dont eat ferns, after they have uncurled. they are poison. Hawthorn leaves are a great sourse of vit C and make a good cabage substitute although a pain to gather. If by the sea shore then do try sea kale, it is fantastic. but only pick the leaves not he plant. ENOUGH.