My Mom, who was a vigorous and athletic woman into her 80s and a big hiker, instructed me that the best way to observe nature was to find a good spot on the edge of a meadow, at the edge of a marsh, along a stone wall, in the woods at the edge of a ridge or hill, and to sit alone. Ideally, on an edge so there is a mixed habitat.
To sit in dull, non-synthetic clothing, and just to watch and look around for an hour in an relaxed, meditative, but alert state. For hunters, this is normal in a deer stand or in a duck blind, but it can be done without a firearm too.
Do not move much except to scratch your nose. Compose yourself. No camera, no binoculars, no firearm, no dog, no friend. An hour sitting quietly, especially at dawn or dusk, can be an education.