Tit keeps banging on my window

For the last 2 days this long-tailed tit has been banging on our windows, every few seconds it's back, seems very odd behavior. I can't decide whether it is mad or has just made a boob. we have tried drawing the curtains, but it makes no difference, it doesn't put it off when we are stood there either. the wife says it's deranged and crazy. we are used to the odd bird or duck flying into the window, but never continually like this. we even had a owl fly into them once, left a nice imprint. please visit rosaburn.co.uk to see what we do and we can also be found on google maps. we are on the isle of arran near the port in Brodick, Arran is often described as Scotland in miniature and is a very beautiful place to visit as well as live. Lots of famous people have visited Arran including the queen. We also filmed geese quarrel at this location as well as the new calmac film. If you like whiskey you will love Arran nearly all the pubs still do the 35ml measure and we are home to the isle of Arran distillery. Anyway if you have any idea why this is doing this please let me know in the comments "so we can get a breast of the situation" sure there must be some other boob jokes that I could chuck in if I put my mind to it