Possibly neglected 5th grader

Over the last few weeks a friend of my sons' (they are 10 and 12) has been spending a lot of time at our house.He is a very nice and funny boy. The first time he came over he stayed about six hours. This weekend, my concern really ramped up. He came over around 1:00 on Saturday. It was snowing here and he showed up in regular shoes with holes in them, jeans, and a flannel type overcoat, wanting to play outside with my bys. Luckily, I had some snow boots and gloves that fit him. They went sledding with some other friends for about 2 hours then came back inside. He borrowed some clothes from my oldest and i put his jeans and over shirt in our dryer. He had dinner with us. Ate 8 chicken nuggets, an apple sliced ip, and then had four small slim jims and a granola bar, then six more chicken nuggets (refused to eat any vegetables, I didn't hassle him about it). He stayed until 9:10, at which time I had my boys walk him home (only six houses down, and they had my cell phone, I just didn't want him walking alone.) When my boys came home, I asked if they saw him enter his house and they didn't (they left him on the pkrch, obviously not their fault, I didn't specify).So my eldest and i walked out to his house and knocked, because I wanted to make sure he was in out of the cold. (Very cold here) At @9:40 at night he answered the door himself, dogs barking, no adult to be seen. I didn't want to spook him or make a big deal so we said, great, just wanted to make sure you are safe, and left.My husband and I talked that night, very disturbed that no one seemed to be worries about hom, or at hime, but we knew he was inside and felt we don't know enough about his situation to be reporting g anything yet.R O'Day he showed up around noon. We invited him in and i fed him linch. Again, he just packed the food away to the point that I'm concerned. I have two boys, one younger and one older, they eat a ton! This kid ate more than them both combined.We played some wii games together, they went outside, came back in. He cheerfully helped clean up the toy room. Then when he had to go home he asked if he could come back over when his chores were done. I told him, of course, but he didn't come back over.So, what to do? Should I be worried? Should I try to meet his mom?Right now, I'm just going with making him feel welcome at all times, and seen (positive attention, making sure he knows I'm listening when he talks).Mostly, it's the lack of cold weather gear (essential here), lack of supervision (I'd freak if my kids were gone that length if time and that time of n8ght), and extreme appetiteAny help appreciated. . via /r/Parenting http://ift.tt/2gTPTKX