Are insects nutricious and do they taste good?

I have this hippie friend, he eats for free, practicly. He says he likes to live off his land and gets all of the nutrients his land has to offer, he picks danilions, and other weeds in his yard, he traps insects like ants, bees, and spiders, he sometimes eats birds that crash into his window, small mammals, snakes. I didn't think it's healthy, but is it? and do these things taste good?