I have spend a large portion of my life in pursuit of wildlife. I love taking pictures of animals in the wilderness. Of course, when I cannot go to the wilderness, nature preserves and zoos that feature environs will do nicely.
I am not a big fan of wildlife management because the minute you manage it, it's no longer wild. It's an oxymoron.
The best way to "manage" wildlife is simply to let it manage itself. Now, that goes against the modern way of thinking, but it's true. In trying to do what we think is right for nature and the preservation of wildlife we often do more harm than good. I'll give you an example.
Putting hatchery stocked trout in Western streams has served to introduce bacterial infection and whirling disease into native populations and it has weakened the gene pool. I have seen freshly planted brookies in Pennsylvania streams that had ulcers on their sides that were from bacterial infestations in Pennsylvania's hatcheries.
I prefer going into wildlife preserves and nature areas to take pictures or shoot video with as little disruption as possible.
Here is the type of picture one can take when one is careful.
I took this shot with a 70-200mm lens on a Pentax professional digital SLR camera.
The deer just sat there very quietly and watched me as I took pictures. I moved carefully and did not make a lot of noise or appear threatening in any way. White-tailed deer are very smart and curious. As long as you pose no threat you can usually get some nice pictures before they move away.
You'll notice that this is an eight-point buck wearing summer velvet. The antlers will be very hard and no longer covered in soft velvet by mating season (the rut).