This salamander is considered critically endangered because it lives in only four streams in the southern Zagros Mountains of Iran.
An interesting thing about this listing is that, like some critically endangered species, it thrives in captivity and there are a number of these guys in private hands. Even though they breed well in captivity, they should still be considered critically endangered because the genetic distribution of the captive population may not be as robust as that in the wild, and counting species health based solely on numbers can not be considered indicative of viability.
The sign by this guy said that their call sounded like a cow mooing. I thought “that’s odd”, and then thought no more of it until a kid wandered up and started mooing at the bird. Not much later, the entire flock was at the front of the cage looking at her and, eventually, mooing back.
So there. If you ever need a capuchin bird, stand outside and moo for a while.