the great plains of America an area
covering nearly a hundred million acres
of grassland here a group of males are
limbering up for their show
these are sage-grouse they already have
a dapper look an eye-catching fan of
tail feathers and a glamorous ruff of
Ches plumage but in this vast landscape
there seems a distinct lack of anyone to
impress fortunately these guys have the
moves to get the party started
and these juddering moves also create a
signature sound sage-grouse make this
bizarre noise by dropping their brightly
coloured air sacs and the sound can
carry as much as three kilometres which
considering the size of their habitat is
just what the males need to attract
females to their display ground
competition between males for the best
spot is fierce
it's all about securing the most visible
patch to show off their prowess females
visit every day for up to a month and
we'll carefully judge the variety of
displays before choosing their mate