We got these two chicks from a Tractor Supply store. They were Bantam Polish straight runs. They are now 4 weeks old. One is developing red lines under their chin which appear to be wattles. Also a red line developing around their beak where the feathers meet the beak. The other chick has the lines under their chin but they are not red. I’m assuming the one with the red lines is a Rooster and the one with just lines and no red is a pullet? Here’s some pictures. Picture 1, 2, and 3 is the suspected roo. 4 and 5 of the suspected pullet. Thank you for your help!