Spontaneous Sex Reversal Study Chart

CALLING ALL SEX REVERSED CHICKEN STORIES! 

Do you have a chicken (hen or rooster) which you believe has undergone a spontaneous sex-reversal? Then share your chicken’s information with the Urban Chicken Podcast to be included in our (not exactly) scientific study on this phenomenon.

Please send your bird’s details to the Urban Chicken Podcast through the CONTACT PAGE.  Be sure to include all of the relevant information which is listed below on the chart categories.

Chicken's Name & Age at ChangeChicken's Location & Date of Change Chicken's breed & Original GenderPhysical & Behavioral Changes? Crowing? // Egg-Laying? Mating as opposite sex?Producing offspring? // Change Permanent?Link to Chicken's Info Post
Frida Kahlo Chicken -- 1 yr old Boise, Idaho --Summer 2013Black Sex-Link --HenMore AggressiveYes crowing // Yes egg-laying regularlyNoNo offspring sired -- Change not permanent (she stopped crowing)UCP Episode 014 and 018
Lucy -- Unknown ageConnecticut -- Summer 2013Buff Orpington --HenPossibly larger and redder comb and wattlesYes crowing // No - not laying Doing mating dance towards other hens No offspring sired -- Change seems permanentUCP Blog 013
Unknown name -- 1 yr oldUnknown location -- Spring 2014Rhode Island Red -- HenLighter neck feathers than the other RIRsYes crowing // Yes egg-laying, but eggs can be small, and sometimes yolk-lessMounting other hensNo offspring sired // Change seems permanentUCP Blog 013
Lulu -- 2.5-3 yrs oldPhoenix, Arizona -- Summer 2014 White Leghorn -- HenMore aggressive, grew larger comb and wattles, Grew taller, Growing spursYes crowing // Egg-laying has tapered to a stopNoNo offspring sired // Change's permanency unknownUCP Blog 017
Name Unknown - 10 months oldPortland, OregonUnknown -- HenNone Yes crowing//Yes egg-layingNoNo offspring sired//change permanency unknownUCP Episode 058

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