records and book keeping

The new year is coming up and I want to start practicing keeping my flock records (health and matings) and finances. I'm very new to breeding mostly although I've kept a livestock financial recordbook in the past and was wondering if there's a way to consolidate breeding and financial records or if it's just better to keep them separate? If you keep separate books, do you focus a book on the roo, the hen or each bird? I have a smallish flock. Any other tips or advice would be very much appreciated as well. Thank you so much!