Why flighty female swallows play away

They say a warm personality is more important than good looks- but try telling that to the North American barn swallow.
Even after the swallows have paired for the season, females may stray if their males don’t keep themselves looking sexy.
The science journal shows that the North American barn swallow still shops around for new suitors. And forget temperament or charisma;the females judge the males by their appearance, notably their redish colour!! 😉 Anna 😀