Sometimes I feel the same about it being quieter in the bush than the back yard. Depends on the location, season, weather, etc. Some places I've hiked/camped the birds make an almighty racket but some places are dead quiet.
Birds are great, especially first thing in the morning as the sky starts to lighten and their calls fill the air all around for a good hour or so. Just recently, while hiking in Limeburners Creek NP the bird life was prolific and the morning song was just amazing.
Where I'm living at the moment there is a patch of coastal bush (bottlebrush, teatree, cassia, wattle, etc) beside the house so I see and hear a lot of the usual visitors, about 35 different species most days including braminy, sea eagle, osprey, rails, lapwings, black and white cockatoos, rosellas, lorrikeets, wattle birds, tree creepers, tawny frog mouth, goshawks, owls, honey eaters, magpies, butcherbirds, willy-wag-tails, larks, shrikes, drongos, koel, wrens, sparrows and robins to name a few. The wattle birds are the most vocal.
If I didn't have other Aspie interests I would be a twitcher
