This one has no red on it at all, only by parting the breast feathers can you see broad brown tips on the feathers, distinguishing it from a purely streaky female. It was first captured as a juvenile in July 2017.
A typical example, this was an adult when first captured in June 2017.
An extreme case, bringing to mind birds typically seen in the Mediterranean at this time of year, and technically known as a 'stonker'. This one was also fledged prior to 2017.
I've spoken before about Linnets appearing in West Wales in the spring with bleached primary tips, a feature more usually seen on warblers that spend the winter somewhere considerably sunnier than Ceredigion. This female, fledged in 2017, shows the feature well. The brown tips are the parts of the primaries that are exposed to sunlight when the wing is closed.