It's ethical, but you will get limited results, and depending on your location, you would need to be aware of bear activity. The digital electronic calls are the best for predators. If you get the small, portable, hand-held units, buy the extra speaker and you will be able to pull the animal in closer as you can put the call in a location adjacent to you, thus tricking your prey into walking right past you toard the sound of the dieing rabbit.

It has limited application because most predators that are called, move quickly, often too fast for you to get set up, or they "hang-up" just out of range. If they spot any kind of funny business they will NOT come in. That's why it's hard to get really good shots and it has limited use - IMHO. In contrast to photography, A hunter needs only a split second to see the animal, put the crosshairs on him at a distance still too far for the animal to relize what's going on, and shoot - unfortunately, we do not have glass that long, and if we did they would see the front ellement long before you would get any good shots.

Also, a predator that's on the hunt and going after food, is also prey, therefore they are extreemly alert and will spook at the first sign that somthing's wrong. they are very, very aware of what's going on arround them when it comes to food.

You can improve your success by combining a digtial call with an electric or remote activated decoy like a rabit or some kind of fur that jumps arround. Those things seem to help a lot especially if the animal can see it. If he sees it and thinks it's prey, and nothing is there eating it yet, he will approch quickly, and with less apprehention.

Finally, the wind. No matter what you do use the wind, if a predator smells you you never even will know they were there. If they smell you they will head the oposite direction in a hurry, especially if they know that they have been tricked by a call. And, for most animals it only takes one or two times before they figure it out - keep this in mind when selecting a location from which to call, animals that have been called will be almost impossible to photograph.

A huge word of caution!!!!!!!!!!!!!!!!!!!!!!!

I hunt as well as photograph wildlife and I call in one or more gizzlies EVERY year. Just know that if youre calling predators, you could be the prey!

Good luck and have at it, it can be a lot of fun, so I'm told - LOL!
Take care.