Been a lot of peeps camping Stormfeather lately, so I thought I'd give them a heads up, in case they happen to check here.
I took down Stormfeather at 1:30PM PST today. Before me, he was last killed at 2:30AM yesterday. I know that because I was there when he was killed previously. So in total he was a 35 hour spawn. Longer than 19 hours, but not enough to constitute a skipped spawn.
So judge your camp times accordingly, and good luck to those who have him next on their hitlist.
BTW: I had help dropping Lodi about 6 hours after Stormfeather went down.