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Posted 6 y ago
Responses: 6
Thank you, my friend CW5 Jack Cardwell for posting an interesting discussion about a Northern Cardinal which has characteristics of both and male cardinals - displayed in coloration AKA an example of a "gynandromorph"
Is Shirley Cardwell a relative of yours?
Posted from your link.
"NewsCut
Now appearing at the bird feeder: a gynandromorph by Bob Collins February 11, 2019, 7:11 AM 7
Oh, for sure it’s not a raccoon climbing a building, but a cardinal is currently at the top of the list of animals that divert the nation’s attention from less important things.
Shirley Caldwell of Erie, Pa., spotted it in her backyard the other day and now bird watchers can’t get enough of it.
Half male. Half female. Percentages may vary.
It’s known as a a gynandromorph, NBC News says.
It was easy to spot because male cardinals have bright red coloring; females have the less spectacular golden hue.
National Geographic explains the science of the Z and W chromosomes in birds.
Gynandromorphy like that in this cardinal occurs when a female egg cell develops with two nuclei — one with a Z and one with a W — and it’s “double fertilized” by two Z-carrying sperm.
The chimeric individual then develops with half of its body as a male ZZ and the other half as a female ZW. If you were to examine a cell from the bright red male side, it would have cells with ZZ chromosomes. If you looked at a cell from the left, it would have cells with ZW chromosomes. This phenomenon happens in birds, many insects, and crustaceans.
This cardinal may be able to reproduce. Caldwell says its apparent mate is a male cardinal in her backyard."
FYI LTC Stephen C. LTC (Join to see) Lt Col John (Jack) Christensen Lt Col Charlie Brown Maj Bill Smith, Ph.D. Maj William W. "Bill" Price Maj Marty Hogan SCPO Morris Ramsey SGT Mark Halmrast Sgt Randy Wilber Sgt John H. SGT Gregory Lawritson CPL Dave Hoover SPC Margaret Higgins SSgt Brian Brakke 1stSgt Eugene Harless CPT Scott Sharon SSG William Jones
Is Shirley Cardwell a relative of yours?
Posted from your link.
"NewsCut
Now appearing at the bird feeder: a gynandromorph by Bob Collins February 11, 2019, 7:11 AM 7
Oh, for sure it’s not a raccoon climbing a building, but a cardinal is currently at the top of the list of animals that divert the nation’s attention from less important things.
Shirley Caldwell of Erie, Pa., spotted it in her backyard the other day and now bird watchers can’t get enough of it.
Half male. Half female. Percentages may vary.
It’s known as a a gynandromorph, NBC News says.
It was easy to spot because male cardinals have bright red coloring; females have the less spectacular golden hue.
National Geographic explains the science of the Z and W chromosomes in birds.
Gynandromorphy like that in this cardinal occurs when a female egg cell develops with two nuclei — one with a Z and one with a W — and it’s “double fertilized” by two Z-carrying sperm.
The chimeric individual then develops with half of its body as a male ZZ and the other half as a female ZW. If you were to examine a cell from the bright red male side, it would have cells with ZZ chromosomes. If you looked at a cell from the left, it would have cells with ZW chromosomes. This phenomenon happens in birds, many insects, and crustaceans.
This cardinal may be able to reproduce. Caldwell says its apparent mate is a male cardinal in her backyard."
FYI LTC Stephen C. LTC (Join to see) Lt Col John (Jack) Christensen Lt Col Charlie Brown Maj Bill Smith, Ph.D. Maj William W. "Bill" Price Maj Marty Hogan SCPO Morris Ramsey SGT Mark Halmrast Sgt Randy Wilber Sgt John H. SGT Gregory Lawritson CPL Dave Hoover SPC Margaret Higgins SSgt Brian Brakke 1stSgt Eugene Harless CPT Scott Sharon SSG William Jones
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If I saw one of those around here in New Orleans, my first thought would be "What the hell happened to that cardinal?!" Beautiful, don't get me wrong, but I'd be a little confused at first. Either way, sunflower seeds all around.
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