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Which pattern allows cuckoos to get more food from foster parents? Detailed answer

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Which pattern allows cuckoos to get more food from foster parents?

Cuckoo chicks thrown into other people's nests are usually larger and stronger than the nest owners' own chicks, so cuckoos need more food. In Cuculus fugax chicks, during development, a special pattern in the form of an open beak appears on the wings, which allows them to receive more food from foster parents due to this illusion.

Authors: Jimmy Wales, Larry Sanger

 Random interesting fact from the Great Encyclopedia:

What grade did the teacher give at school for the design of the current US flag?

The US flag changes every time new states are admitted to the state - new stars are added. The last time the flag was changed was in the late 1950s, when Hawaii and Alaska were granted statehood. More than 1500 options for the location of the stars came to the name of the president, and in the end, the option of 18-year-old Robert Heft was adopted. Although the teacher at the school, to whom he first handed over the project, put 4 with a minus for the work, and jokingly promised to revise the grade if the US Congress approved his project. And so it happened - and the teacher had to change the grade to 5.

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