Long-tailed tits

A bit ropey but these things were at the coconut first thing when light was still a bit on the dim side. Just like to see so many together even if only as a blur. They appear suddenly as a flock and then go just as suddenly and they seem to have a supersensitive lens-detecting organ. But unlike some other birds they seem quite happy to feed as a crowd and they never appear alone. We have 5 or 6 blackbirds but they seem very aggressive among themselves and spend a lot of time chasing each other away from the food.