Hi I’d like to introduce myself and my new additions to our family. I have 6 Delaware chicks that are 5 weeks old now out of the 6 there is a runt that is growing at a slower pace than the others Lil bit seems to be healthy just a lot smaller. 1/4 the size of the others his/her head is still yellow feathers are growing in accordance to its size , the other chickens ‘protect’ lil bit and are all friendly as I hold them every day what could be the reason why lol bit it’s smaller