Blue tit behaviour

Good Morning all, 

I was sat watching our feeders this weekend with a nice brew (what could be better?) and spotted a blue tit which seemed particularly jittery. After watching it for quite some time, it would appear that it seems to have constant tics/spasms and when it is flying to approach feeders, it is seeming to flutter its wings rather a lot, rather than just gliding in like the other blue tits/birds. It is still feeding and does not seem to be 'puffed up' or lethargic. 

I have never seen this before and wondered if this is something to be concerned about with regard to bird diseases. We regularly clean the feeders/birdbaths to hopefully help stop the spread of anything. 

If anyone could advise that would be great

Managed to upload a clip here now:

.https://youtube.com/shorts/0sHit-1pryU?feature=share