The idea of keeping everything about one pairing/clutch in one thread is kind of neat, but I find it rather impractical for reading. It can often be hard to figure out where in the thread the new updates start.

I think a good compromise is to post updates in a new thread, but also post a link to the previous post(s) about a particular clutch.

I think if one breeder keeps everything about their season with multiple clutches from different pairings all in one thread, that would just get too confusing.