Speak­ing of pi­geons ...

Science Illustrated - - SCIENCE UPDATE -

Pi­geons feed their off­spring a cheese-like se­cre­tion known as pi­geon

milk. The "milk" is rich in fat and pro­teins, and it is se­creted and vom­ited from the crop, which is a type of gul­let pouch.

Car­rier pi­geons have been hon­oured for their

war ef­forts, in­clud­ing Gus­tav, who car­ried the first re­port to main­land Eng­land about the al­lied pow­ers land­ing in Nor­mandy.

In the 1800s, there were up to five bil­lion

in­di­vid­u­als. But the pi­geons con­sumed crops, and ex­ter­mi­na­tion cam­paigns made them go ex­tinct in 1914.

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