The lesser noddy was at one time considered as a subspecies of the black noddy (Anous minutus).[2] The close relationship between the two species was confirmed by a molecular phylogenetic study published in 2016.[3]
The lesser noddy is 30–34 cm (12–13 in) in length with a wingspan of 58–63 cm (23–25 in) and a weight of 97–120 g (3.4–4.2 oz). The plumage is brownish black. The forehead and crown are lighter in colour. This species is smaller and slightly paler than the similar black noddy and has pale rather than dark lores.[2]
^ abGochfeld, M.; Burger, J.; Garcia, E.F.J. "Lesser Noddy (Anous tenuirostris)". In del Hoyo, J.; Elliott, A.; Sargatal, J.; Christie, D.A.; de Juana, E. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions. Retrieved 17 April 2017.
^Cibois, A.; Thibault, J.-C.; Rocamora, G.; Pasquet, E. (2016). "Molecular phylogeny and systematics of Blue and Grey Noddies (Procelsterna)". Ibis. 158 (2): 433–438. doi:10.1111/ibi.12363.