Every crested coua chick is born with unique markings in its mouth.

These “targets” may guide parents with feeding. 1/

Full vid: https://cutt.ly/sdZklnV 
The crested Coua is found in Madagascar, These colourful birds are not strong fliers but both parents work together to care for their chicks. Image credits https://cutt.ly/XdZzztd  and Dallas Zoo. 2/
The crested Coua is found in Madagascar, These colourful birds are not strong fliers but both parents work together to care for their chicks. Image credits https://cutt.ly/XdZzztd  and Dallas Zoo. 2/
The crested Coua is found in Madagascar, These colourful birds are not strong fliers but both parents work together to care for their chicks. Image credits https://cutt.ly/XdZzztd  and Dallas Zoo. 2/
certain young finches also have such markings.

These may have evolved to combat brood parasites, parents to find chicks in a dark nest as they reflect light, to stimulate parents to feed and help parents to determine health, as markings change with age. http://bit.ly/3bBKt3i 
certain young finches also have such markings. These may have evolved to combat brood parasites, parents to find chicks in a dark nest as they reflect light, to stimulate parents to feed and help parents to determine health, as markings change with age. http://bit.ly/3bBKt3i 
certain young finches also have such markings. These may have evolved to combat brood parasites, parents to find chicks in a dark nest as they reflect light, to stimulate parents to feed and help parents to determine health, as markings change with age. http://bit.ly/3bBKt3i 
certain young finches also have such markings. These may have evolved to combat brood parasites, parents to find chicks in a dark nest as they reflect light, to stimulate parents to feed and help parents to determine health, as markings change with age. http://bit.ly/3bBKt3i 
certain young finches also have such markings. These may have evolved to combat brood parasites, parents to find chicks in a dark nest as they reflect light, to stimulate parents to feed and help parents to determine health, as markings change with age. http://bit.ly/3bBKt3i 
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