Female Common Blue vs Argus ?

Female Common Blue vs Argus ?

Observation - Female Common Blue vs Argus ? . Description: I've plumped for the former as there were a few Common Blues around using the principle that if it looks and sounds like a duck it is probably a duck!

I've plumped for the former as there were a few Common Blues around using the principle that if it looks and sounds like a duck it is probably a duck!