Nerium

Nerium can be found in the pond. Which one? Any of them, but you'll be lucky if you actually manage to find them, floating still with only the upper half of their head and their wings on the surface of the water, covered in moss and lilypads, deep in silent meditation.
And don't ask them to come out for some chit chat, either- Nerium will insist that they must remain perfectly still and as silent as possible in order to cultivate the biome of Pond Muck growing on their back- nevermind that they seem to be resting in a different pond each day without any apparent damage to their strange little garden.
Nobody has ever seen them outside of a pond, so they must be moving between them under the cloak of night. They have been described as "elusive" and "difficult to talk to" by other residents of the gardens, but it's clear that they hold no ill intent towards anyone- just a desire to be left alone.

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