I think there's truth to this, and yet unless I've missed it I've found very, very little out there in terms of advice or education on stuff in the field. Everything seems to concern technical camera operations, choices about composition and use of lighting (which presuppose good fieldcraft), or the most basic or surface level aspects of field craft like, "don't scare the animal."
For instance, there's a ton of stuff out there talking about the importance or "primacy" of backgrounds, what makes for a good background, and technical considerations for getting a good background (e.g., go to eye level), but I've found almost nothing about how to actually get in a position where you can get the background you want and get to eye level without the subject spooking and running off.
I can offer you a few tips, but these apply to me regionally...
1. I'd suggest that you spend some time defining how far you are willing to drive on a regular basis to make your photographs. Draw a circle of that distance from your home and identify all the areas of public land, state park, refuges, water access, etc... Then find the roads that give you access to these spots. My range is 25 miles each way. I am willing, on a whim, to drive 25 miles early enough in the morning to get to a location by sunrise. Knowing these parameters will help you to time your shooting period. As someone who was an AP Biology teacher for many decades, time was extremely limited for me. I could shoot weekend mornings and when school was out, and that was it. As a result, I learned to be efficient with my time.
2. Scout those areas only during the time periods that you will be shooting. Bring binoculars and scout areas that you think would be great for wildlife landscapes as well as tighter work. Record the type of wildlife you see, the location of wildlife trails, and the location of lakes and ponds. For example... for the last three years, I learned that an albino doe always went to the same pond during a 3 week period two times a year. She appeared at the pond about an hour before sunset and left as the sun was setting. I never see her any other times of the year, but for three years running I have photographed her. This type of legwork pays off, but it takes time to bear fruit.
3. Find a hike that you can take that leads you to a place with potentially rich wildlife. I found a beaver pond in a state park that is 20 miles from my home. It is a pain for me to get on location, but I am committed to this spot. I have to hike up hill and downhilll to get to the spot (3/4 mile each way). I've learned that I need to be there before the sun crests the horizon, that I need to sit below the dam, and that I will likely scare the beavers away when I hike in. However, I have learned that if I wait 45 minutes, the beavers will leave the den and that I can get a good hour of photography with them. My work at this beaver lodge began in 2014 and continues today. Even as a full time teacher, I manage to visit the lodge 4 to 6 times a week in May, June, September, and October because I have learned that these are the best time for me to photograph at this location. My persistence has led to much more than beaver photography, as my best images of river otters, muskrat, and beavers and deer have occurred here. In addition, I have photographed swans, geese, grebes, multple duck species, warblers, thrush, and white tailed deer from where I photograph the beavers. These images were made from only two locations on the site. It takes years, but you can create opportunities for yourself with patience.
4. Find a friend... Find a photo friend who you can learn with, trade locations, and develop skills. I am a crappy birder but a decent photographer. One of my closest friends is a birder who is talented at calling birds in... I've taught him photo technique and he has helped me to fill out my warbler and sparrow files.
5. Get on the water... Invest in a stable canoe or kayak and bring your camera and lens on the water with you. I know it sounds scary to bring your expensive gear in a canoe, but it pays dividends. I shoot from the water all of the time. Species like loons, grebes, mergansers, herons, pelicans, sea otters, and seals are less fearful of you when you are on the water. They will often get close (sometimes too close for photography). This will also lower your angle and allow you to have better backgrounds. I absolutely love shooting from a kayak or canoe.
6. Find a farmer friend who will allow you to set up a blind on their land. If you can set up a temporary blind near water or wildlife trail and be in the blind before sunrise, it will payoff. The key is to be persistent and accept that some days will be winners and some will be losers.
7. Find the sure things... they exist. These will be your special trips... For example, I photograph prairie chickens during Easter Weekend. This species is visible from blinds set up by the nature conservancy. I have to make reservations and the price is a donation. I make this into a 36 hour photo-weekend. It requires a 4.5 hour drive, night camping or lodging, and 4:00 am wake up. I am then treated to about 4 hours of amazing photography. During these times, I develop my skill as an ecologist to learn about the bird and its behavior. I now can tell when a female is around, when the birds will fly, and when they will fight. I always walk away with interesting photos.
Field craft is the hardest part about being a wildlife photographer, but you will grow as a photographer in a way that equipment will never help you grow.
cheers,
bruce