1) Birds such as emus 2) Birds that fail air test 3) Cassowary and ostrich 4) Emus and kiwis 5) Emus, kiwis et al 6) Flat-breasted birds 7) Flightless birds 8) Ostrich and kiwi 9) Ostriches 10) Ostriches, emus et al Found on https://www.crosswordclues.com/clue/ratites