100 Years Lost, the Super Rare Bird 'Half Male Half Female' Reappears

100 Tahun Hilang, Burung Super Langka 'Separuh Jantan Separuh Betina' Muncul Kembali

"100 Years Missing, Super Rare Bird 'Half Male Half Female' Reappears"

"A feeding station in Villamaría, Colombia, witnessed an interesting discovery by ornithologists."

"They successfully captured an image of a wild green honeycreeper (Chlorophanes spiza) with uniquely divided feathers, half green for the female and half blue for the male. This event was recorded between October 2021 and June 2023."

100 Years Lost, the Super Rare Bird 'Half Male Half Female' Reappears

The green honeycreeper is a captivating small-stemmed bird, belonging to the Thraupidae family. It is commonly found and easily recognized in its range, from southern Mexico to southeastern Brazil.

Honeycreeper Bird Food

"They tend to consume nectar, fruits, and insects, and often visit locations that have available fruits."

The color of the feathers serves as an indicator of gender. Females have grass green feathers, with a slightly lighter shade on the underside, while the male bird is aqua blue, accompanied by a black head and chin.

The difference in color on the beak also indicates sexual dimorphism: male birds have bright yellow mandibles and upper and lower jaws, with a black culmination, while female birds have duller yellow mandibles and black upper jaws. The chicks mostly resemble female birds. Although male birds have slightly longer wings and tails than female birds, there is significant variation within each sex, and many traits overlap.

This rare honecreeper phenomenon is known as bilateral gynandromorphism.

“Bilateral gynandromorphism is a condition where one side of an organism exhibits male characteristics and the other side female,” said Professor Hamish Spencer from the University of Otago, as reported by Sci News.

“Condition is found in a large number of animal groups, especially those that are sexually dimorphic. In birds, this phenomenon is believed to occur as a result of errors during meiosis of the egg, followed by subsequent double fertilization by separate sperm,”
The translation of "lanjut Spencer." to English is "continue Spencer."

Source: Sci News

"As a result, one side of the bird has heterogametic female cells (ZW) and the other side has homogametic male cells (ZZ)."

"This is the second documented case of gynandromorphism in the green honeycreeper in a period of over 100 years."

“Many bird watchers can spend their entire lives without seeing bilateral gynandromorphism in any bird species. This phenomenon is very rare in birds. It is very striking, I am very lucky to have seen it,”
The translation of "kata Profesor Spencer." to English is "said Professor Spencer."

The translation of "Swipe Up" from Bahasa to English is "Swipe Up". The text remains the same, so if it were in HTML, it would look like this: ```html Swipe Up ```

“Photos of these birds make this discovery more significant because they can be said to be the best of all wild bilateral gynandromorph bird species that have ever existed.”

“Gynandromorph is important for our understanding of sex determination and sexual behavior in birds.”

The scientific work from this team has been published in the Journal of Field Ornithology.

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