Lek mating females away from the hotshot. A manipulative experiment using the little bustard, "Tetrax tetrax", was done to test the various lek evolution models. The experiment involved varying the size and sex ratio of leks using decoys. To test whether or not the presence of a hotshot determined lek formation, a hotshot little bustard decoy was placed within a lek. After the fake hotshot was added to the lek, both male and female visitation to the lek increased. The hotspot model considers the female density to be the catalyst for the clustering of males. This model predicts that leks will form
Blastobasis tarda Blastobasis tarda Blastobasis tarda is a moth of the family Blastobasidae. It is found in Australia in Queensland and New South Wales, as well as New Zealand. It is an introduced species in North America, where it has been found in southern California. It has also been reported from France. The wingspan is about 15 mm. Adults have brown forewings with fringes along the inner margin that are longer than the width of the rest of the wing. The hindwings are paler and narrower and have fringes along the costa and even longer ones along the inner margin. Adults are