Ok long story short I'm trying to follow another taxidermists tutorial on mounting birds. I'm going to go ahead and try and mount a little Common Teal. In the tutorial the person used a lotion they claim that ''tans'' the bird skin. So I asked them about this, what was it called, and such... This is what they told me: Their skins cannot be garment tanned. Some of them can, but many end up too fragile. Heck, if you have the patience, fish skins can be garment tanned as well! I tan -all- skin, otherwise they'll just be eaten by bugs over time. They'll look grand the first year, maybe two, but soon skins will shrink too much and bugs will damage skins if they're not tanned and treated against it. I use a substance called L1 for tanning my bird skins. I do know you can't garment tan bird skins, I wanted to know what tanning chemical they were using. The name ''L1'' doesn't help at all for me and when I replied to the person asking what exactly is L1, and where to get it, they ignored me. I tried checking the taxidermy supply sites I buy from by searching this ''L1'' but I've been getting ''no such item''. Honestly, does anyone know what this persons talking about? What do you use to ''TAN'' bird skins. I feel this person is deliberatly with-holding information from me, and its really degrading. I bought a Teal mounting kit some time ago and it came with a preservative that you paint onto the skin before mounting, I'm not totally sure if that is it or not. Seriously tho can someone shed some light on this for me? What is L1?