those pics are good because they show exactly how tiny neonate brown snakes are, good stuff.
with the neonate ringnecks I've had them eat ant eggs/larvae but keeping a decent supply of that isn't the easiest thing to do. also small salamanders, you might have luck with chopped up pieces of salamander/worms and placed in a bowl left in the enclosure overnight. maybe a little water bowl full of tiny guppies or mosquito fish.
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Mike
KingPin Reptiles
www.kingpinreptiles.com