Table 1. Capture history summary for breeding adult Whiskered Terns Chlidonias hybrida ringed, released and recaptured in the Upper Vistula River Valley, 1993 to 2011.

N marked / year of first recapture
1994 / 1995 / 1996 / 1997 / 1998 / 1999 / 2000 / 2001 / 2002 / 2003 / 2004 / 2005 / 2006 / 2007 / 2008 / 2009 / 2010 / 2011
Adults
1993 / 1 / 0 / 0 / 0 / 0 / 0 / 0 / 0 / 0 / 0 / 0 / 0 / 0 / 0 / 0 / 0 / 0 / 0 / 0
1994 / 0 / 0 / 0 / 0 / 0 / 0 / 0 / 0 / 0 / 0 / 0 / 0 / 0 / 0 / 0 / 0 / 0 / 0
1995 / 1 / 0 / 0 / 0 / 0 / 0 / 0 / 0 / 0 / 0 / 0 / 0 / 0 / 0 / 0 / 0 / 0
1996 / 2 / 0 / 0 / 0 / 0 / 0 / 0 / 0 / 0 / 0 / 0 / 0 / 0 / 0 / 0 / 0
1997 / 1 / 0 / 0 / 0 / 0 / 0 / 0 / 0 / 0 / 0 / 0 / 0 / 0 / 0 / 0
1998 / 0 / 0 / 0 / 0 / 0 / 0 / 0 / 0 / 0 / 0 / 0 / 0 / 0 / 0
1999 / 4 / 0 / 0 / 0 / 0 / 0 / 1 / 0 / 0 / 1 / 0 / 0 / 0
2000 / 23 / 0 / 0 / 0 / 0 / 0 / 0 / 0 / 1 / 0 / 1 / 0
2001 / 11 / 0 / 0 / 0 / 0 / 0 / 0 / 0 / 0 / 0 / 0
2002 / 0 / 0 / 0 / 0 / 0 / 0 / 0 / 0 / 0 / 0
2003 / 3 / 0 / 0 / 0 / 0 / 0 / 0 / 0 / 0
2004 / 18 / 0 / 0 / 1 / 1 / 0 / 0 / 1
2005 / 34 / 1 / 0 / 0 / 0 / 2 / 0
2006 / 44 / 1 / 0 / 0 / 0 / 0
2007 / 48 / 1 / 0 / 0 / 2
2008 / 38 / 0 / 4 / 0
2009 / 8 / 0 / 0
2010 / 82 / 7

Table 2. Capture history summary for Whiskered Terns Chlidonias hybrida chicks ringed, released and recaptured as breeders in the Upper Vistula River Valley, 1993 to 2011.

N marked / year of first recapture
1994 / 1995 / 1996 / 1997 / 1998 / 1999 / 2000 / 2001 / 2002 / 2003 / 2004 / 2005 / 2006 / 2007 / 2008 / 2009 / 2010 / 2011
Fledglings
1993 / 28 / 0 / 0 / 0 / 0 / 0 / 0 / 0 / 0 / 0 / 0 / 0 / 0 / 0 / 0 / 0 / 0 / 0 / 0
1994 / 172 / 0 / 0 / 0 / 0 / 0 / 0 / 0 / 0 / 0 / 0 / 0 / 0 / 0 / 0 / 0 / 0 / 0
1995 / 302 / 0 / 1 / 0 / 0 / 3 / 0 / 0 / 0 / 0 / 0 / 0 / 0 / 0 / 0 / 0 / 0
1996 / 90 / 0 / 0 / 0 / 0 / 0 / 0 / 0 / 0 / 0 / 0 / 0 / 0 / 0 / 0 / 0
1997 / 76 / 0 / 0 / 0 / 0 / 0 / 0 / 0 / 0 / 0 / 0 / 0 / 0 / 0 / 0
1998 / 1 / 0 / 0 / 0 / 0 / 0 / 0 / 0 / 0 / 0 / 1 / 0 / 1 / 0
1999 / 183 / 0 / 0 / 0 / 0 / 0 / 1 / 0 / 0 / 1 / 0 / 1 / 0
2000 / 157 / 0 / 0 / 0 / 0 / 0 / 0 / 0 / 1 / 0 / 0 / 0
2001 / 191 / 0 / 0 / 0 / 0 / 0 / 0 / 0 / 0 / 0 / 0
2002 / 9 / 0 / 0 / 0 / 0 / 0 / 0 / 0 / 0 / 0
2003 / 0 / 0 / 0 / 0 / 0 / 0 / 0 / 0 / 0
2004 / 0 / 0 / 0 / 0 / 0 / 0 / 0 / 0
2005 / 29 / 0 / 0 / 0 / 0 / 0 / 1
2006 / 72 / 0 / 0 / 0 / 2 / 1
2007 / 36 / 0 / 0 / 1 / 0
2008 / 19 / 0 / 0 / 0
2009 / 18 / 0 / 0
2010 / 107 / 0