Choose a location that best represents the concept of your film. For example, if you want to film squirrels playing in a tree, go to a place where they are frequently found. If the site is not your property, seek permission from the owner. Set up your camera equipment in the area. Take into consideration the range of colors in the landscape, the weather and the natural lighting to help you select the appropriate camera settings.
Bring along accessories, such as a tripod and telephoto lenses. Be prepared for changes in the weather and pack a plastic bag and lens hood to protect your equipment in case of rain. If the weather is cold, keep your spare batteries close to your body to keep them from dying. The idea is to blend in with your surroundings; so, make sure your film session is not cut short by forgetting to wear appropriate shoes and clothes, causing your trek through nature to be too uncomfortable.
Film as close to the subject as possible. Try different and unconventional angles for the most unique footage. When filming from a distance, include close-up objects in the frame to give the scenes depth. Be patient and ready to spend hours in one location, especially if you are waiting for an animal to appear.
Allow animals to be themselves. Do not attempt to interfere in their natural routines by startling or baiting them into some kind of reaction. Try not to talk during the filming process, as this may disturb the flow of the scene. You can add commentary later during the editing process.