For any standing dead wood, test it. Don't assume it's dry.
I just had a large half of a big leaf maple cut down. It's been dead for 2 years. At the base it's about 24" in diameter. I split some of the wood from higher up that was around 12" thick and tested the wood for moisture content. Cold, it comes in at 47.4%!! I'm letting it warm up to room temp and will test again. This wood definitely will not be ready to burn for at least a year in spite of being dead.
I just had a large half of a big leaf maple cut down. It's been dead for 2 years. At the base it's about 24" in diameter. I split some of the wood from higher up that was around 12" thick and tested the wood for moisture content. Cold, it comes in at 47.4%!! I'm letting it warm up to room temp and will test again. This wood definitely will not be ready to burn for at least a year in spite of being dead.