In general, the weather, though unusual, is still "winter". There are loads of information and articles out there to help you out in knowing how to deal with different situations.
Here is a source of information that I am familiar with:
http://www.mpks.org/articles/winter.htmlThis site is wonderful for information:
http://www.koivet.com/I have scads of articles that I am organizing for a club, but have yet to look through them all. There are many involving the winter pond and unusual weather. I shall dig through them. I am not a ponder so I do not know the answer offhand.
They should not become too active, though, in 40 degree temps. That is still too cold.

And a spring cleaning of winter waste is SOP.
I will move this over to the pond section where our "pond experts" will take a look for you.