Here I am trimming the rafter tails with a circ saw in between rain showers. I bought the lumber for the rafters a little long, as we had not yet decided on an overhang size. Lemontree settled on 2', or thereabouts.
Note: Do not attempt to build a house based on what you see here. We've used 2x4s 24" on center, with wooden gusset plates to make longer lengths out of our reclaimed lumber. Of course that is not strong enough for human habitation, but I'm pretty sure it won't blow down in a strong wind, or collapse under a winter snow load. On the other hand, if there's an earthquake, I hope it happens while the chickens are outside.
Here's a little bit of fun. The ladder to the nesting boxes takes up a lot of room, which makes it hard for humans to get in periodically to muck out the... er, muck. So,
it hinges up. (The hinges are also reclaimed from the former hot tub.) Additionally, there is a carefully engineered, cantilevered 2x4 cut at an angle under the landing. It provides solid support for the dead load of the ladder as well as the live load of 7.3 average chickens... just don't let the kids sit on it.