Yes yes and yes and
Yes, you may spray--good to do if you are having to open the incubator (like with the kerosene). Your humidity sounds okay--not great, but okay.
Yes, you may help--but only as a last resort. As long as he's making progress and sounds strong, it's best to let him get himself out. He'll be stronger and hardier for it.
Duck eggs take 24-48 hours to hatch even under the best circumstances. My rule is, if it's started to zip and hasn't made any progress for 24 hours, I start considering helping.
If you decide to help, search these forums for instructions (I think there's as sticky at the top of this forum), and follow them.
Good luck. And:
I'm so happy he's alive!!!!!

Yes, you may spray--good to do if you are having to open the incubator (like with the kerosene). Your humidity sounds okay--not great, but okay.
Yes, you may help--but only as a last resort. As long as he's making progress and sounds strong, it's best to let him get himself out. He'll be stronger and hardier for it.
Duck eggs take 24-48 hours to hatch even under the best circumstances. My rule is, if it's started to zip and hasn't made any progress for 24 hours, I start considering helping.
If you decide to help, search these forums for instructions (I think there's as sticky at the top of this forum), and follow them.
Good luck. And:
