and a third is "a soft, single tick". A reported flight call is "a harsh, nasal gzee gzee". Status The IUCN has assessed the sickle-winged nightjar as being vulnerable. Its fairly small population is rapidly declining due to habitat loss and degradation. References sickle-winged nightjar Birds of Argentina Birds of Brazil Birds of Paraguay sickle-winged nightjar Taxonomy articles created by Polbot