I have been to the coast a couple of times in recent months and each time have collected lots of big seagull feathers. I know goose quills are supposed to be the best, but I didn't have any luck trying to get hold of some of them. Here are the four seagull quills I made:
I found a couple of films on YouTube to help. One technique involces 'cooking' the feather in hot sand (that makes the quill stiff and hard, so probably much like bamboo), another blanches the feather in boiling water, which keeps flexibility. I decided to try the water first - flexibility sounds and good and water sounds easier!
As you can see from this close-up, my cuts are a bit ragged (it's all very small and fiddly), but that doesn't seem to matter.
The line does have the same unpredicable quality that I liked with the bamboo. When I get some time, I will try the sand technique and see how that alters the line.