I very, very much doubt this. If they were to attack a Russian jet or convoy, perhaps even in self-defence, it could be casus belli for either side.
That would be a huge risk - one too far at the moment - unless they really are prepared to go into combat. Is it worth the escalation due to an act of aggression?
What they are likely to be doing elsewhere is probing close to Russian air space to keep air assets pinned down and gaining intel from communication etc.
It could even go as far as Suppression of Enemy Air Defenses (SEAD) missions, but @Nutzo will likely know more about all that jazz.
Aye, it was more a throwaway remark.
Their BUKs have been getting targeted as they're prized assets, and as they don't have air superiority yet so it may be working.
Again,
@Mutzo Nutzo any idea if they're using their longer-range SAMs like the Growler and Grumble?