Question for birders in Ajijic/Chapala/Guadalajara Posted July 22 · Report reply On 7/20/2020 at 12:55 PM, sm1mex said: What are the big black birds that circle around and around over the lake. They don’t look like they’re hunting for anything. Most or all of the flocks of "big black birds" near the lake in Chapala municipality are Crested Caracaras. These have white wing tips. Black vultures do not. Caracaras are nesting in La Floresta in the eucalypts.