Any thoughts on the action in this recording?

["misha.volf" misha.volf]

Hey guys,

check this out at a decent volume to hear the low level detail - let me kno=
w what you think is happening.

http://soundcloud.com/mishavolf/animals-sex-or-murder

I left a pair of AT4025's running over-night in upstate NY, at the Capital =
District WMA. On listening back, at around the 7 am mark, there was quiet a=
 bit of action.

There is a loud call (0:07), then maybe a scuffle?  some snorting and grunt=
ing (an occasional airplane). Then another loud call (1:33), and then it pr=
etty much goes into ... ? with other birds cheering them on?

any thoughts or comments?

misha