Toucan Nostrils?

Where are the nostrils located in the toucan.The only information that I have found was "Yes. Toucans have nostrils. It is located at the base of the beak, near the head." but I still can't figure where exactly is this.I have tried looking at x-rays and online picture but I still can't find them.How can a toucan have his beak replaced/fixed with out knowing such information.Any information with diagrams would be helpful.

Quetzel2017-06-10T13:52:50Z

Enlarge image and you can see the nostril near the top of the beak before the black feathers.

http://www.rainforest-alliance.org/species/keel-billed-toucan

E2017-06-10T05:08:12Z

There is a small hook at the tip of the upper mandible, and the nostrils are placed at the base of the beak, near the head.