That's a bearded black polish, crevies dont have white ear lobes! Ans yes usually have thinner crests
Here's some of my bantam crevies, note lack any visable ear lobe, and if you can see it, it's red, always if pure.
Here's some of my bantam crevies, note lack any visable ear lobe, and if you can see it, it's red, always if pure.



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