A popular enquiry recently has been about 'odd' looking blackbirds; either missing feathers through being in moult (when they can look very scruffy and give the false impression of disease), or having 'unusual' colouring - usually patches of white where the normal pigment would occur. Reports of suspected ring ouzels in gardens are rarely so - unless you happen to live on a mountain or moor, or at a coastal migration hotspot!
All the best,
Darren