This is the phenology for Caspian Terns on the Lower
Columbia.

year first juv last
dct dct dt
1987 100 250
1988 100 260
1989 239
1990 94 259
1991 97 190 236
1992 87
1993 95 254
1994 92 246
1995 239
1996 96
1997 95 197 264
1998 86 198 249

day avg 94.2 195 249.6
stdev 4.8 4.4 9.7
avg Apr 4 Jul 14 Sep 7
date
--
Mike Patterson I don't swear for the hell of it.
Astoria, OR Language is a poor enough means of communication
mpatters at orednet.org and we've got to use all the words we've got....
Besides, there are damn few words anybody understands
Henry Drummond in "Inherit the Wind"

http://www.pacifier.com/~mpatters/bird/bird.html