Birchwoods
and willow warblers go together like ... well, anything you
can think of that blend. A little slice of paradise.
Sutherland
birchwood community in song - mainly willow warblers. mp3 -1.2MB

These
birds know how to throw a party. Oddly enough the females tend
to wander among the ecstatic males with an air of indifference
- playing it cool, I guess. The males pair up to joust, changing
partners at intervals. That's the impression given, but apparently
a cock's stance on the lek is determined by his status. Very
occasionally, the fights become real.
Black
grouse lek in the Cairngorms. mp3 -1.2 MB

As
night falls, greenshank flight in from the surrounding moors
to a sheltered sea-loch in Sutherland to feed. This being spring,
the males can't help singing a little and courting any females
present.
Greenshank
male 'love song'. mp3 - 2.1 MB