Amazon/Pionus hybrids
These are all feral parrots that live in trees in a botanical garden. Appropriately, the
garden has many South American trees and fruit.
They are feral hybrids born in "the wild" from former escapees (the adults appear to have no identifying leg rings).
The offspring show various traits of their parents below.
One of the parents is an Orange-winged Amazon. There are two in the trees, one may be another feral offspring
or another feral adult.
There is also a feral Yellow-crowned Amazon in the garden but from the look of the offspring it is clear
that the other parent is the Maximilian Pionus who also lives there.
Links:
Orange-winged Amazon
Maximilian Pionus
more hybrid parrots