Sutton Courtenay 29th March

A dark alba Barn Owl

 

Barn Owl an alba variant: all photos The Paranoid Birder

 

Why it isn't a European Dark-brested Barn Owl (guttata)...

 

The pale undertail coverts and pale legs are the giveaway – they should be buff in guttata

pale underwing coverts – should be buff in guttata

white facial disc – should have extensive dark marks around the eye in guttata

pale grey primary tips – should be much darker grey in guttata

rather thin barring across primaries – should be broader in guttata and go across the whole feather

Taken from Birding Frontiers

More on Dark-brested Barn Owls on Dutch Birding