Conowingo Dam, April 24, 98

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        This is the Conowingo Dam report for April 24, 1998. Coverage was
by Rick Blom from 1:00-4:00 p.m. Warm, light breeze. Eight flood gates
open, water very high.

Double-crested Cormorant        150+ (see below)
Black-crowned Night-Heron       13 (see below)
Great Blue Heron                100+ (see below)
Osprey                          16 (nest building)
Bald Eagle                      2 (adults)
SPOTTED SANDPIPER               3 (arrival)
Caspian Tern                    4
Northern Parula                 5
Louisiana Waterthrush           1
OVENBIRD                        1 (arrival)

Standard residents. It was not birdy. There are at least four active
Black-crowned nests. Two had birds incubating and two were still under
construction. The Great Blue Heron colony is very active. Two of the
cormorants, perched in the trees on Bird Island (second island down the
river), spent a few minutes handing a stick back and forth but no evidence
of nest building was apparent and eventually they just dropped it. Nesting
has been anticipated here for several years and should be checked for
regularly.

Also flying:
Spicebush Swallowtail           3
Red Admiral                     1
Zebra Swallowtail               6
Clouded Sulphur                 2
Orange Sulphur                  1
Cabbage White                   many
Eastern Tiger Swallowtail       1



"Lack of education is an extraordinary handicap when one is being
offensive."  Josephine Tey

Rick Blom
rblom@blazie.com
Bel Air, Maryland

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