High hunting pressure leads to lower number of cocks and as a consequence to smaller
leks.
This study was conducted on Sage-Grouse from 3
leks in southeastern Alberta, Canada (Fig.
Adult male Black Grouse on
lek Picture: ANDY HAY rspb-images
The researchers found that in the area where the two manakin species come together, females are attracted to yellow-collared males more than to white-collared males, but only when there are lots of other yellow males within
leks.
Lesser prairie-chickens use a breeding system in which males display at
leks for females.
The results of this study suggest for the first time that variability in spacing of Gryllotalpa major burrows within a
lek may be related to specific botanical attributes of the grasslands in which these
leks are located.
The females raise the young alone and while males will return to their father's
lek the female insists on finding another
lek within 20 miles in search of a mate.
(1992) found that the most successful males on black grouse (Tetrao tetrix)
leks were less often infected by Leucocytozoon spp.
Because vocalizations of males on
leks are a reliable indicator of presence of this species, a survey to determine location of active
leks would provide valuable insight into current status of populations.
At one
lek site in Russia in 1961, some 200 males were recorded - a figure which represents the largest number of makes ever recorded at one
lek.
In most species, it's the males that crowd into clusters, or
leks, to show off for choosy mates, explains Francis M.
In avian and mammalian species, these aggregations would be termed
leks. The purpose of this study was to examine the lek-like breeding assemblages that occur in marsh habitats lacking vegetative cover.