Canon 1DX 840 mm f/8 1/2500 ISO 500 handheld manual
One of the areas I frequent has a large population of invasive species, Whydahs, Mannikins, Waxbills, Munia, Bishops and many more.
They are doing extremely well, here is a shot of one of the waxbills out of a flock of 30 or more.
-Thanks for looking