Roe deer question

["NordicNature" nordicsounds]

Does anyone know what the "click" sound is when the Roe deer is barking? Yo=
u can hear it when he barks several times in a row on the second and fourth=
 bark or so.
In this recording you can also hear that the grasshopper warbler briefly st=
ops singing when the roe deer barks at least the first times when he is clo=
se.
There are some more description on the sound in soundcloud/nordicnature.
http://soundcloud.com/nordicnature/roe-deer-capreolus-capreolus

regards
H=E5kan