I ordered a mix of Rhode Island Red (female), New Hampshire Red (female), Speckled Sussex (female), and Welsummers (male) from Meyer Hatchery they are 3.5 weeks old. I understand they will be hatchery quality and vary from the standard. Most I've been able to ID because they resemble each other but 4 look a bit strange. First three images are the same chicks, the latter three images are a different set. The first set has 1 normal sized chick compared to the others, the other is the same age but much smaller. Thank you for the help. Second group, the smaller chick is the same size as the one above. The larger chick is 'medium' sized, smaller than most of the flock but larger than the 2 the two noticeably smaller chicks.