Zoo Łączna - Pheasantry - Blue Eared-pheasant (Crossoptilon auritum) aviary

These look like Brown Eared-Pheasants to me...

It might. I didn't pay too much attention to it. There were ear pheasants in another aviary and it also had a brown sheen on its feathers.

@Philipine eagle
This a Blue Eared-Pheasant, along with a male Lady Amherst's.
The Blue is blue.
The Brown is brown, with a white rump and tail-base - as in the first picture.
Neither really have much of a sheen as their feathers are loose and a matt effect.
For info - the White is white (usually, when it is not blue - and/but depending on what taxonomy you follow)