This morning, my chicks had run out of water, and after i refilled it, i noticed that the littlest 2 week old rir, after he drank, had a couple of bubbles come out of his mouth. It was definitely his mouth, not his nose. And he kind of stood there like he was trying hard to swallow the water. But after that, he acted fine. I admit, i had some other distractions, so i didn't look him over more than to feel of his crop, which was semi-full and squishy - about the same as another chick his age. Should i be concerned? Does this signal some kind of crop trouble? Or did he just drink too fast because he was thirsty?