“…The family comprises peculiar species such as the only bird known to hibernate, the Common Poorwill ( Phalaenoptilus nuttallii ) ( Carey, 2019 ; French, 2019 ; Woods et al , 2019 ), and one of the few birds that uses echo-localization, the South American Oilbird ( Steatornis caripensis ) ( Brinkløv et al , 2013 ). The European nightjar has been found to be more resistant to pathogens than other bird species ( Jiang et al ., 2021 ). Although categorized as ‘least concern’ by the IUCN ( IUCN, 2016 ), the European nightjar has experienced a steady population decline in the past decades, and is of conservation concern in Europe ( Eaton et al ., 2015 ; Evens et al ., 2017 ; Keller et al ., 2010 ).…”