Ken,
As I said in the original thread, your bird can't be a 1st winter because at this time of the year a 2cy bird would be called a 1st summer. But anyway it looks like an adult to me (black primaries with large primary patch). And it's definitely not a male, a male Collared of any age would look very different in april.
Regarding the Portland bird...Is it an artefact? In image 2 of Ken's shot of four, there appears to be a subdued collar and lesser covert bar showing, albeit not as strong or absent as in the rest of his images.
To revert back to my previously ''claimed'' Semi-collared Flycatcher, This was dismissed out of hand, on the basis that the white margins (webbing) on the tertials were excessive, thus didn't conform to the ''Classic'' SCF, presumably had the margins been typical, it would have been acceptable as such?
Yet..It is now acceptable to conveniently default the Portland bird (according to your reasoning) to Pied Flycatcher, with an abnormally large primary patch, and reduced fore-crown patch, neither feature being supportive of
hypoleuca!!!....on that reasoning, doesn't my suggested 1st calendar year (grey),Cyprus male Semi collared Flycatcher carry more consideration?
And just to add, don't all three ''types'' where overlapping, hybridise to an extent, thus providing more variations on a theme....does anybody really know what they are talking about, or is it just speculation based on the last paper published by whoever?