Tere -- I tried for years to think of what chachalacas' calls remind me of. Then I realized it's a kind of kids' noise-maker, popular when I was growing up. Raspy, kind of metallic sound. What do you think? Vintage Noise Makers

Ha! That's the thing. It's such an odd sound that it conjures up different associations for different people. A creaky door, a sick duck, a noise-maker, plywood ripping, squeaky cork, a creature from The Outer Limits.