Tags that should be aliased to 'overhead view'

high angle, top down, bird’s eye view, aerial view, top view -> overhead view

Mostly OK with this. Maybe just an implication for “bird’s eye view” though? It tends to be used (>50%) for very high views of a landscape, and that distinction would be lost with an alias.

Also added the high angle tag which seems to have similar uses to the above.

@when she felt her wings unfold  
Agree, but it will need a “cleanup” to remove bird's eye view from non-map/landscape images.