About us: We own the Wild Birds Unlimited nature shop in East Lansing, Michigan,
a store that provides a wide variety of supplies to help you enjoy the birdwatching hobby.

This blog was created to answer frequently asked questions & to share nature stories and photographs.
To contribute, email me at bloubird@gmail.com.

Saturday, July 18, 2015

Scrambled eggs: Half-Male, Half-Female birds

A gynandromorph bird has a mixture of genetically male and female cells. The term is from Greek "gyne" female and "andro" male. The scientists believe gynandromorphs are created when an egg becomes fertilized by two sperm. It's likely that the phenomenon occurs in all birds’ species but it's not always obvious because males and females of many species often look similar.

- The Half-male, half-female research appeared March 11 in the journal Nature

- Northern Cardinal photo from Sci-News.com

- Rose-breasted Grosbeak photo from Gloucester Daily Times, Gloucester, MA 

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