Haydel's Triple Tone Crow call has three setting positions that let you sound like an adult, young or baby crow. You can also produce a realistic hawk scream by blowing across the reed sideways.
I love this call. I use it before the more expensive crow calls I have. I don't use the triple tone feature because I don't thing you should bite down on crow calls. It distorts the sound and causes more saliva to get in the call. I put some rainx on the reed. great volume, great sound. easy to tune, durable. I have two just in case I loose one. It is small so you can keep it in your hand while shooting allowing quick comeback calls. I have also located turkeys with it.
I think this call could have been a little deeper in tone and resonance, but aside from that it's a great call. It's really cool to see how crows respond to it- kind of freaky, actually, when there is a "murder" of crows circling overhead...