Is this Nosema? or just cleansing flights?

[Dexterjc]

So our weather has been less than spring like for about 2 weeks (snow, rain, hail, ect.) Yesterday and today were our first sunny days since the end of February. Today when I went outside I saw this. Yesterday when I opened up the hives I saw no poop on the frames.





I did tear one bee apart and found normal brown and yellow stomach contents.

[buzzbee]

I don't see much to worry about.Especially if they were crawling around warming in the sunshine after being cooped up for a while.If the inside of the hive is clean,I would say your fine.
Check this article:
http://www.countryrubes.com/images/NOSEMA_KH_ARTICLE.pdf

[Dexterjc]

Ken, thanks for the article.

[Michael Bush]

There isn't nearly enough poop.  You sure you have bees in there?  ;)  After a long confinement I would expect a lot of poop...