Here's my submission! It's my take on if a small raptor were given the time to develop wings in a more forested environment.
Code won't copy to clipboard sadly ;-;
Small-ish loredump: These wyverns, henceforth referred to as Barkbeak Wyverns, are quite small compared to their fire-breathing cousins. Measuring in at about four feet tall and seven feet in length at most, their size poses a serious risk. Due to this, Barkbeaks have developed a natural camouflage, with certain parts of their bodies even taking on the texture of bark and leaves. This applies especially to their wings and 'beaks'; the wings mimic the leaves of the large trees they call home, while their snouts are tipped in extremely tough scales that have both the durability and texture of a tree's bark. This adaptation doesn't come without its downsides; these wyverns have slowly lost teeth over time, sacrificing them for the ability to keep their hardened scales without needing extra nutrients. They've also been relegated to gliding, as the large holes in their wings that help the whole "it's a leaf" illusion pass make gaining altitude mid-air impossible.
Their camouflage isn't just for survival; it's for hunting. When a larger wyvern or even a dragon leaves their nest to get food, a Barkbeak (or two) will scurry out from the underbrush and make quick work of what eggs are in the nest, and on occasion, they will take an egg back to their own nest for later consumption.
Males typically have larger head crests and feature a bright accent color, like a jungle flower, while females have a moss-like texture on their bellies for their young to stay warm.