Finch recharging its vitamin D supply

Drying out, after a wet night? or this bird may have trichomonosis - fluffed up and lethargic - difficulty in swallowing and messy feathers round its beak...almost invariably fatal, caused by microscopic parasites, and spreading throughout the UK and has crossed into mainland Europe, affecting mainly greenfinches, but other members of the finch family as well.
Vital to keep all feeding surfaces clean - disinfect with bleach. Preferably stop feeding garden birds for a spell - mass congregating of birds around bird tables is likely to cause the spread of the disease.