Mute Swan - Latin Name Cygnus Olor. Male of White Swan. Stock Photo - Image of lake, background: 210379222
Philadelphia Zoo - It's not hard to guess how the black-necked swan got its name! Did you know male swans are known as cobs and females are pens? | Facebook
Everything you need to know about mute swans | Scottish Wildlife Trust
Tundra Swan - American Bird Conservancy
Female Swan Facts & ID (Male vs Female)
6 things to know about Swans
Everything you need to know about mute swans | Scottish Wildlife Trust
Trumpeter Swan | EEK Wisconsin
What Is a Mute Swan? - Owlcation
FAQs |Swan Information |Trumpeter Swan Society Plymouth MN
how to tell the difference between a male and female swan | Kim Smith Films