This is some kind of 'wild' bee happily rolling around in the wild Cistus flowers scattering pollen everywhere. I think this behaviour is why bees like mason bees are more effective pollinators - they are literally coated with pollen!
And this is yet another type of wild bee - a lovely silvery coloured one - enjoying a (domestic) Phacelia tanacetifolia flower.
There seem to be an incredible number of different types of wild bee in Portugal, including huge hairy ones that I always want to adopt as flying teddy bears, and tiny little solitary miner bees who seem to like digging holes right where I want to walk.