Bright-Breasted Wyverns are a breed of dragon easily recognized by their bright red markings. They are a small breed, only the size of a full-grown man. However, they have developed poisonous barbs on their feet to make up for their size. Their coloration is used to warn off potential predators of the danger, and is also used to attract mates. They are very social, and can often be seen preening in large groups.

Dragons are highly-intelligent reptilian creatures that—from a human perspective, at least—appear to live forever. Many different varieties of dragon exist, each with their own unique qualities, habitats, and behavior. Adolescence in dragons is usually marked by the growth of a hatchling’s wings, although not all breeds of dragons grow wings and some breeds have other traits that indicate the beginning of maturation. In Galsreim, dragons and humans coexist peacefully.

Greensong is a popular dragon in Silvre's flock, despite the fact that his mate, Longtail, is a "mutt" in a mostly purebred flock. He is kind and understanding, strangely humble for a Bright-Breasted Wyvern, and loyal. He possesses many of the qualities people would assign to the ideal friend; he is a good listener who gives good advice, he is honest, and he is unconditionally kind- similar to his best friend, Whiteheart. It's actually fairly hard to dislike him- a lucky fact, as he can't or won't hold his own in a fight. He simply refuses to attack, instead attempting to reason with his opponent or flee. He insists that he won't hurt anyone, a fact that has left many doubting if he can fight at all and is just afraid to admit he can't. But it speaks for his character that even under attack, he cares enough to refrain from fighting and try to talk. His voice is mellifluous and beautiful, and song is one of his favorite things; often, his voice is heard mingling with the songbirds.