Clutch size of Blackish Nightjar Nyctipolus nigrescens is generally considered to be one egg. Records of two-egg clutches mentioned in ornithological literature of the 19th and early 20th century are possibly mistakes or misidentifications. However, we report a documented recent observation of a female incubating two eggs.
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18 June 2017
Clutch size of Blackish Nightjar Nyctipolus nigrescens
Johan Ingels,
Thiago V. V. Costa,
Frederik P. Brammer,
Douglas G. D. Russell,
Loïc Epelboin