I recently bought a pair of silkie chickens. They are about 4 months and one is white an one is partridge. For a few days now the white one will not let me hold it, it keeps flapping and kicking. If it gets a hold of my hand it perches on my arm and doesn't want to get of. It also seems to keep its head and neck low to te ground and doesn't stand up very tall which makes it hard to hold (I slide my hand under and use my pinkie and thumb to hold the legs) it also doesn't walk around very much but other than that it seems healthy, what should I do?