Jason Bittle. (2023, December), The Ultimate Revenge : National Geographic Thai edition : 27
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To prevent birds from making a mess sometimes. The owner of the building has a method of stringing up thorn panels to keep birds out edge of the building, but a new study found that
The bright-headed black-billed salika knows how to peck at its thorn stripes. Learn to pluck out thorn strips. Then use it to cover the top of the nest to protect against enemies such as crows.