What it is
Hareline Marabou Blood Quills are strung marabou feathers with a thin stem and a naturally short length. On the hook they build a full profile without much bulk, and in the water the fibers breathe and pulse with a lot of motion. The stem is cooperative, so you can wrap it as a feather without fighting it.
What to tie with it
This is a go-to for streamer tails and wings when you want movement, especially on leeches and bugger-style patterns. It also works well palmered as a body to make bushy, alive-looking profiles on swimming nymphs and damselfly nymphs, and you can use smaller clumps for gills and thoraxes. At the vise it’s the kind of marabou you tie in as a tail or wing, or you tie in by the tip and palmer forward for a fuzzy, mobile body.
Flies and the fish they're for
On a Woolly Bugger, it’s the classic tail material for trout in rivers and stillwaters, and it’s just as at home for smallmouth in warmwater lakes and streams. Cat Eyed Boobie wings built from marabou are a staple for trout in lakes where you want a fly that rides and moves when stripped. Patterns like Galloup’s Barely Legal lean on marabou movement for big predatory trout in rivers and stillwaters. Intruder-style flies commonly target anadromous fish like steelhead and salmon in larger rivers, where that marabou profile helps the fly swim and flare.
How it compares
Compared to Hareline Extra Select Marabou, this has a thinner stem, shorter fibers, and a fuller look on the hook, which makes it a stronger choice when you’re palmering or tying short, bushy patterns. If you need extra fiber length or you’re specifically after long barbs to strip off for other uses, Extra Select is the better pick.