Photos of Scarlet Macaw parrot birds (Ara macao) taken in Dolores Park (San Francisco).
Those two Scarlet Macaw birds can fly free and are trained to come back to their owner at a voice signal. The birds owner often let them fly around Dolores Park in the afternoon, when it's not too windy. It's amazing to see those beautiful rainbow-colored pet birds fly around and come back to land on their master's shoulder.
For more information about Scarlet Macaw birds, read en.wikipedia.org/wiki/Scarlet_Macaw.