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Home / New Zealand

Northland hen 'dropping bombs'

By Hannah Norton
Northern Advocate·
5 Aug, 2013 05:35 AM2 mins to read

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Wayne Le Grice with two eggs. Photo / Michael Cunningham

Wayne Le Grice with two eggs. Photo / Michael Cunningham

A Northland hen is continuing to pop out huge eggs - but it's not because of the weather, season or what she's been eating.

Henrietta, the brown shaver owned by Wayne Le Grice, first laid a whopper in April, and has laid five in a row of the same size since.

After the first large egg, Mr Le Grice said she hadn't laid for five or six days but then she laid a monster.

"She really dropped a bomb."

Before her run of unusually large eggs, Mr Le Grice said Henrietta usually laid relatively normal-sized eggs for a brown shaver.

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Kerry Mulqueen, senior executive technical officer at the The Egg Producers Federation NZ, said factors such as feed and weather were unlikely to affect the size of the hen's eggs.

"It's more to do with the age of the hen. The older they get the bigger the eggs," he said.

But then there's the situation where the eggs are double-yolkers - then it is simply because there is a "bigger mass" for the albumin (outer layer or egg white) to cover.

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Despite hens being genetically predisposed to producing single-yolked eggs, sometimes younger hens can have a few double-yolkers, before returning to single-yoked eggs.

"Something has upset the timing of the release," he said. "But then it comes back to normal process.

"I wouldn't expect it [Henrietta's large-egg laying] to keep on going - but it is a biological machine so we can't always say," he said.

Although Henrietta's eggs are big for a chicken, the Guinness Book of World Records won't be making any additions with her exploits.

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The "largest egg from a bird" is still the work of a Swedish ostrich that laid a five-pounder (2.2kg) in 2008.

There is no category for the largest chicken egg.

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