I was idly looking through today's images when I came across this one from Box1.
This bird doesn't look familiar! It has a large white patch of feathers just beneath its collar and the feathers on its back look somewhat scruffy and tousled.
No sign of a trident shaped tail either!
Here is a view of Fantail taken early today. She looks neat and tidy with smooth plumage.
The white patch on her back is at its largest from this viewpoint - but even so it is fairly small. In fact it is not visible from the viewpoint of the image above.
Also, she has a wide white head band.
Another image of Fantail, a neat elegant bluetit.
This is Neptune. He still has his very obvious trident shaped tail. His body plumage is also pretty smooth for a male, without any significant sign of a white patch.
His head feathers, though, are typically male - not as smooth as Fantail's, slightly streaky.
As he departs, you can again see his doubly forked tail!