Swallows and Amazigh mythology
The swallow bird (l'hirondelle), or Thamarab, is found in most Amazigh jewelry. Its story goes back to the legend of the rain god Anzar, who ascended to the sky with a broken heart after a girl rejected his request for marriage. Every time he sent the black swallow bird to bring good news to the people that rain would come so that they would not fall into despair. .
Anzar or Afour is an Amazigh word that means rain. As for Anzar himself, he is Avid Evfur, meaning the rain king who is able to bring down and stop the rain. In Amazigh culture, there are no gods, but rather kings of the elements, Agladan, in the service of the greatest god, Aglaid Amqran. It is still called for during times of drought in some areas of North Africa.
As Amazigh mythology tells us, when the rain stops and the need for rain becomes severe, no one can save creation from destruction except Anzar.
Because the Amazighs knew that this bird was an envoy from the god Anzar, they gave this bird a sacred status and symbolism.
Source: websites