I happened to spot a black kite's nest which is largely made of twigs and could easily be missed looking above from below on an acacia tree.
1/200 s • f/8.0 • 168 mm • ISO 800 (EF lens on APS-C Canon)
In the image above, you can spot the kite's tail jutting out over the nest to the right.
1/200 s • f/11.0 • 176 mm • ISO 800 (EF lens on APS-C Canon)
This one was taken with the nest directly between the camera and the sun for emphasis. Totally lost among the tree's branches.
Photos by me