I was fascinated by these birds with peacock-like plumes. Turns out this is an exemplar of https://en.wikipedia.org/wiki/Victoria_crowned_pigeon.
But notice the artifact to the left of the forward leg! Is it magnification and reflection effect due to the wet floor tile? Is it caused by the cellphone camera switching between elements? (I use an Oppo cellphone). Rolling shutter doesn’t seem likely. Any ideas? Sorry, no RAW to play with.
I guess it’s a composite artefact as the toes are different so from a fraction later than the main foot. The software combined the different frames but failed to remove the ghost foot, I presume?
Was it dark when you shot it? Modern cell phones will shoot a bunch of really underexposed frames then stack the result a la astro processes.
The angle is not right for a reflection, it looks like an artifact from overlaying several images. Which phones routinely do these days.
There’s a visible seam line on the door aswell. So the image was composited from multiple subframes.
Wow… fancy bird! 
Definitely a stacking artifact I would say. Smartphones do a lot of that…
The fusion struggles with closely situated angled lines. Although there is a wide gap in the first image, the halos probably tricked the algorithm.
I wonder if anything was gained by fusion in this particular case. Yes, a single shot image would have been noisy, but I guess perfectly adequate for a typical mobile phone screen or even an FHD desktop screen after denoising.
