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
Two Little Dickie Birds Two Little Dickie Birds "Two Little Dickie Birds" or "Two Little Black Birds" is an English language nursery rhyme and fingerplay. It has a Roud Folk Song Index number of 16401. Modern versions of the lyrics include: The rhyme was first recorded when published in "Mother Goose's Melody" in London around 1765. In this version the names of the birds were Jack and Gill: These names seem to have been replaced with the apostles Peter and Paul in the 19th century. In American English, the variant "Two Little Blackbirds" is more common. <poem> Two little blackbirds sitting on a hill.