I might be going to go get some Rhode Island red and Dominique chicks. Im told they are around a month old, will I be able to tell which are hens and which are roos? I know nothing is certain but Im hoping they're old enough where I can tell- but im no pro Also- if they are about one month old, does anyone have a rough idea of when these two breeds start to lay? Just curious how long of a wait I will have. Thanks!