Guinea hens eat ticks. Chickens, not so much. But they do eat a lot of other bugs.
According to the doctor Ray went to ( to have a embedded tick removed) it takes 24 hours of "feeding" for the tick to transmit the lyme disease to you...and it is done when the tick is done feeding and disengages, so it kinda spits into the open wound. That is why they say to check your entire body for ticks daily....so none goes unnoticed for 24+ hours. It is only the little deer ticks (about the size of a seasame seed) that is currently infected with lyme disease. (someone chime in it Misquitos have also been found to be infected. Since I no longer have kids in my care I am not totally current on the threats to their health) (and I am not worrying about my spelling, does it show? LOL)
To avoid ticks on your kids spray their lower pant legs with repellant with DEET in it. Not on the skin, please, DEET can be toxic to little humans. Tuck their pants in their socks and spray the lower leg. Ticks can't fly, they crawl up the leg to the warm parts of the body; groin, back of neck, armpits being favorite places, but not aren't really picky....ray's was in the middle of his chest. I am a tick magnet. You want your yard cleared of ticks, let me walk through it with bare legs and then we'll knock them into a can of kero to kill them. Reduce the population by half each time I walk through.
My experience with chicks and a rooster is that mellow roos are fine with chicks, and wild and rowdy roos wind up killed by momma. LOL Well, he messed with her babies and I found him dead on the floor a couple days later. Don't mess with the chicks. Didn't someone put up pictures last spring of their white rooster rounding up all the yellow chicks and keeping them warm?