Pen them seperately (and if you have more than one tom you might consider penning them apart from the hens. The boys do like to spar - particularly if the hens are available to all the toms). Our chooks rule the yard (were raised with 3 BBB's) and were well versed on turkeys when our Slates and Royals arrived in June (BBB's succumbed to spradle leg). The chook hens think it's a fun game to charge the toms. However, some folks have toms that have a bad habit of jumping on chook hens and killing them. Guess it has a lot to do with how they were raised.
Here's another link with good info.
http://www.albc-usa.org/downloads.html
Here's another link with good info.
http://www.albc-usa.org/downloads.html