so I've seen like 1 or 2 of these very tiny long insects on coop door....twice found 1 or 2 on poo tray of chickens....it's body is long and the color like a light gray color, kinda see through....i squish them and no blood pops out ever and they don't jump....dunno if they coming from grass crawling up to plastic coop....i checked hens and dont see any of these of them...sprinkled some pemethrine powder on door of coop where i saw 2....I couldn't even get a clear close up pic since they are tiny and camera makes it look like a black speck but it's really more light grey....should I be concerned??? I also got hay in egg area maybe from hey? So far seen pics of all kinds of bugs on chickens and don't think it's fleas (no jumping)or mites (no blood) or lice (bug not light brown)....anyone know what could it be?