We’re moving into new territory here, with no colouration to help the identification process.
Often in the field you aren’t lucky enough to get a look at the colour though – particularly on cloudy days. Or colours can be mistaken; blue can seem black, brown can seem orange… this is when you need to be looking at other aspects of the bird; size, shape, legs, etc…
There is enough in this particular photo to get to the family pretty quickly, but identifying the final species might prove a little tricky:
As per usual the answer will be revealed in this Friday’s Week in Pictures.