The females may respond with a "kee, kee" vocalisation, similar to those of the Little Bustard and Corn Crake.
Great Bustard | Australian Bustard | Little Bustard | Great Indian Bustard | MacQueen's Bustard | Houbara Bustard | Kori Bustard | great bustard |
Highly endangered are Great and Little Bustards, Eurasian Stone-curlew, Lesser Kestrel, Montagu's Harrier and Dupont's Lark, as these species are directly threatened by changes in the steppe ecosystem.