We can find bulk fenugreek for $3 a pound, which means it's also very economical, since you can grow 1L of sprouts from 3 tablespoons of seed. It grows out in a matter of 3-4 days, making it much faster than the other sprouts we use.
Our ducks (and rabbits) also eat: sunflower sprouts (everyone loves 'sunnies'), adzuki sprouts (redbean), mung bean sprouts (chinese sprouts), mustard greens, chia greens, black turtlebean sprouts, and sprouted coriander (baby cilantro). Soybean sprouts seem to make them a bit gassy unless they are cooked for a few minutes first.
We've been really happy with sprouting, as a way to give the ducks some greens through the winter. Here in Newfoundland, sometimes wintertime lasts until May!
Just wondering, are fenugreek sprouts ok for chickens too?