The stories I heard about these notorious thieves and mimic birds it was a called a Fork-Tailed Drongo or African Drongos. The Fork – Tailed species are great opportunists.
For starlings and meerkats in the Kalahari Desert, The Fork-Tailed Drongo, a songbird with glossy black feathers and garnet-red eyes, is like the neighborhood dog: a trustworthy pal that’s always on the alert and ready to warn you about dangerous predators.
Except when it’s lying, because sometimes Drongos,make false alarm calls, causing their listeners to drop whatever juicy morsels they were dining on and flee the scene. Meanwhile the deceptive birds have swooped in and made off with their victim’s meal. “The Bird That Cries Wolf Changes Its Lies”
Indeed Drongos are notorious among wildlife observers for their thieving ways. But sometimes the birds call “hawk” too often, and like the boy in Aesop’s fables who cried “wolf” one too many times, they discover that no one’s paying attention.
This cunning nature of the Drongo has fascinated scientists, as these birds may possess what scientists call Theory of Mind. Drongos spend 90% of their day following other animals to mimic the sound that other animals make.
This is a wonderful ability for an animal to strategically plan and manipulate others, which is a trait only found in humans.