These finches were once very popular caged birds because of their tuneful song. Males are marked with crimson foreheads and chests, and females are much browner.
According to the RSPB web page, the Linnet numbers have dropped over the past few decades, with the UK population estimated to have fallen by 57% between 1970 and 2014.


( 1st picture is a male bird the second is a female).






