Some nice pics there Jan. The second one, of the JG26 FW190A, is the one that inspired me for the planned mini-diorama, June 1944, France.
And yes, the Luftwaffe had virtually always dispersed their aircraft. At the time of the BoB, if there wasn't any woodland as such, the aircraft would be parked as close as possible to a line of trees, and would be under a camouflage of wires, stretched between poles, with foliage threaded through the wires. If small, probably single-aircraft hangars were used on fields, these would be constructed to look like barns, or other farm buildings, and saplings etc placed around them, to make them look 'part of the scenery'.
When 8th USAAF fighter pilots were given clearance to carry out strafing attacks after leaving their bomber-escort duties, the threat of sudden attack from the air became even more prevalent, and Luftwaffe aircraft would be dispersed, whenever possible, around the edges of airfields, under the cover of trees or woodland, or even further off the field if neccessary, and additional, cut branches and foliage would be placed in front and around the aircraft once it had been pushed into it's 'hide'.
Towards the end of the war, when units were hopping from temporary base to temporary base, Autobahns or straight stretches of road, passing through wooded area, would be utilised, with the aircraft parked each side of the highway, under the cover of the trees. There are a series of photos showing abandoned Me262's alongside such a highway 'airfield'.