First, thanks for all off line emails. Also it seems that skimmer photo sparked more than average interest (unexpected) but there was no correct answer yet (sort of expected). A few (expected but incorected) behaviors were proposed. Although I have learned long time ago that many single photos showing behavior can be very misleading it is just one more proof that one might have probably even more problems to identify behavior (from photo) than when trying to ID some difficult species from photographs. I stopped to trust suggestions of behavior based on single photo or descriptions based on short observations. Like some listers see what they want to see some observers will try to classified shortly observed scene base on the ‘best match’ or even worse will try to find similarity to human reactions. In mean time, before I post complete photo series in couple of days, here are a few more photos to add more pieces to the puzzle (and to eliminate some proposed behaviors). _http://www.pbase.com/mbb/image/144745411_ (http://www.pbase.com/mbb/image/144745411) _http://www.pbase.com/mbb/image/144745414_ (http://www.pbase.com/mbb/image/144745414) _http://www.pbase.com/mbb/image/144745415_ (http://www.pbase.com/mbb/image/144745415) and a few more here: _http://www.pbase.com/mbb/black_skimmer_pair__behavior__quiz_ (http://www.pbase.com/mbb/black_skimmer_pair__behavior__quiz) Mark B Bartosik Houston, Texas http://www.pbase.com/mbb/from_the_field In a message dated 7/14/2012 2:22:36 P.M. Central Daylight Time, MBB22222@xxxxxxx writes: Perhaps some have seen this behavior before and know what this pair (male and female) of Black Skimmers is doing. I guess it is some kind of quiz for those who are curious. Skimmers are known for having rich repertoire of many interesting behaviors. So, can you tell what they are doing? _http://www.pbase.com/mbb/image/144735560_ (http://www.pbase.com/mbb/image/144735560)