|Andean Cocks-of-the-Rock Rupicola peruvianus, San Pedro area, southern Peru.|
These brilliant colours come at a cost, as the carotenoids can only be obtained from fruits, then converted, by expenditure of much energy. More about this here.
Further, when a female (below) arrives, a frenzy of flapping and harsh calling erupts, again expending energy. They can ill afford to leave the lek to feed while others are present, lest they lose their spot.
|Andean Cock-of-the-Rock female, Aguas Calientes, Peru.|
She has no need to spend lavishly on gorgeous attire.
|Screaming Piha male Lipaugus vociferans - love that species name! - Yasuni NP, Ecuador.|
Here the display is purely aural, so no sartorial extravagance is required.
|White-whiskered Hermit Phaethornis yaruqui, Mindo Valley, north-west Ecuador.|
|Great-billed Hermit Phaethornis malaris, Yasuni NP, Ecuadorean Amazon.|
Deep in the shadows of the rainforest floor is not a good place for clear photos - sorry!
|Korrigum female and male Damaliscus korrigum, Waza NP, northern Cameroon.|
Previously regarded as a sub-species of Topi or Tsessebe.
|Male Marine Iguanas, Isla Espanola, Galapagos.|
|Macleay's Swllowtail Graphium macleayanum, a species which forms leks over mountain tops in Namadgi National Park high above Canberra.|
|Musk Duck male, south of Canberra.|