This Rare and Beautiful Bird Is Known as a Gynandromorph - Both Male and Female
Bird researchers in Rector, Pennsylvania, got a rare surprise in September 2020 when they spotted a rose-breasted grosbeak split almost perfectly down the middle, with male markings on one side and female markings on the other.
The bird, a rose-breasted grosbeak, or Pheucticus ludovicianus, showed the kind of split plumage that makes gynandromorphism so striking, and so hard to miss once you know what to look for. Annie Lindsay was banding birds with her team from Powdermill Nature Reserve when a colleague called her over to see it.
It was an unforgettable find, and one of the rarest kinds of birds the team could hope to encounter. Read on.
Bird researchers in Rector, Pennsylvania, spotted a rose-breasted grosbeak with all the markings of a male on its right side but female markings on its left.
" Gynandromorphism is most common in insects, and the causes vary.
That split can make the bird look almost unreal in person.
Annie Lindsay knew immediately that the bird was an extremely rare gynandromorph.
The beautiful bird's markings were split roughly down the middle.
The Powdermill Avian Research Center is an emerging national leader in avian research. It works diligently to ensure the best practices for tracking birds.
With the beautiful rose-breasted grosbeak now banded and tracked, we hope this stunning bird can help shed more light on the way gynandromorphs live. We can't wait to find out more about these fascinating creatures!
It was the kind of sighting birders never forget.
Before you go, see how one duck “super mom” cared for 56 ducklings at once.
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