My bird of the week is ... blue tit - just one seen (today). Mind, there aren't many other birds in numbers or regularity of attendance. Pigeons and magpies appear when any scraps are thrown out but, a the hopper, only coal tits regularly, consistently seen.
The disapperance of the blue tits does stand out though. Normally they are the most abundant, regular attenders at the feeders
but about eight years ago they disappeared entirely from our garden
and the rest of the neighbourhood and were hardly seen for nine months.
Interesting to see that great tits are coping with climate change in UK:
BBC NEWS | Science/Nature | Great tits cope well with warming
Might blue tits be having a prolem adapting?