Unfortunately it's hard to tell 100% from the photos, but it looks more like lash material to me than a soft shelled egg membrane due to the folds in the center.
I agree the best thing to do right now is keep an eye on behavior to see if anyone starts acting off, and of course to keep an eye out for any repeat similar items being dropped. If a hen has salpingitis they'll likely drop more lash eggs in the future.
I agree the best thing to do right now is keep an eye on behavior to see if anyone starts acting off, and of course to keep an eye out for any repeat similar items being dropped. If a hen has salpingitis they'll likely drop more lash eggs in the future.