33 Hamburger Recipes For Memorial Day
I don't know who it is that designated May as National Burger Month, but I'd like to give them a big, sloppy, greasy, onion-scented, cheese-covered kiss on the mouth. What better excuse to celebrate our national sandwich (national food?) and look back at the dozens of well-tested burger recipes we have in our archives? Here are 33 recipes that run the gamut from simple to complex, with representation from around the country, breaking regional borders, and indeed inter-species relations. More

@Raymond or Fish
Two reasons: First, a sausage is not a steak or a solid piece of meat. Any moisture that is lost will collect within the skin, as opposed to a steak where the moisture lost just evaporates into the air. There *is* moisture loss in a cooked piece of meat (around 15% or so if you are cooking to medium rare), and that moisture loss generally just evaporates into the atmosphere, or if you are roasting, collects in the pan. In a sausage, it stays as a liquid or steam layer outside of the meat and within the skin.
That said, your sausages also look like they are overcooked. I can see liquid inside the skin bubbling, which means that the meat has been cooked probably well beyond 180°F or so. A sausage should be cooked like any other piece of meat—145 to 160°F at the very most. Any more than that and yes, you'll lose excess moisture.
Fortunately for a sausage, it retains more moisture in general than a piece of meat, so even overcooking it slightly will still result in a juicy end result. But you're best off not overcooking them.
I also don't know where you are getting your sausage from, so I can't guarantee that it's well made. If a sausage is not ground properly (fat emulsified, kept properly chilled), or if it is not cured properly (not enough salt or not enough time between salting the meat and forming the sausages), then it will not retain moisture properly either.