A male swan is called a cob.
Female "pen", male "cob".
A male swan is called a cob and a female swan is a pen.
swan and a cob
A cob is an adult male swan. A female swan is called a pen and a young swan is called a cygnet.
A swan
A female swan is called a "pen". (A male swan is called a "cob")
A cygnet is a baby swan. A male swan is called a cob.
The female swan is called a pen and the male swan is called a cob.
male = cobfemale = pen
A female swan is called a "pen", a male is a "cob".
cob