Les was later surprised to see a black-crowned night heron
on the Rideau River in downtown Ottawa.
IN FLIGHT This gorgeous black-crowned night heron
(Nycticorax nycticorax) soared near our group (Gregg Yan/Best Alternatives)
The most dominant species were house crow, Corvus splendens (n=2518), house sparrow, Passer domesticus (n=772), common myna, Acridotheres tristis (n=327), black-crowned night heron
, Nycticorax nycticorax (n=190) and jungle babbler, Turdoides striatus (n=186).
Species Date Cover type Wetland class Black-crowned night heron
27 April 2013 none 4 Black-crowned night heron
14 May 2014 none 4 Blue-winged teal 10 May 2014 none 3 Black-crowned night heron
22 May 2014 none 4 Blue-winged teal 21 May 2014 none 4 Painted turtle 22 April 2014 1 X 1 3 Painted turtle 21 April 2014 6 X 6 3 Species Mortality Study area Black-crowned night heron
yes Tewaukon Black-crowned night heron
yes Chase Lake Blue-winged teal yes Chase Lake Black-crowned night heron
yes Devils Lake Blue-winged teal yes Devils Lake Painted turtle no (released) Tewaukon Painted turtle no (released) Tewaukon Table 3.
Relocation of a large black-crowned night heron
colony in southern California.
Simmons said ducks, mergansers, black-crowned night heron
, great-blue heron and osprey are the primary predators at the Sandwich hatchery while ducks, gulls and great blue herons are the primary culprits at McLaughlin.
Black-crowned Night Heron
was the first species to arrive on any night, and the most persistent in remaining.
The agency has also gunned down the brown-headed cowbird, boat-tailed grackle, common raven, American crow, fish crow and waterfowl and wading birds that relish the coastal wetlands neighboring Kennedy, such as the wood duck, bufflehead, American wigeon, semipalmated plover, sanderling, least sandpiper, black-crowned night heron
, great egret and cattle egret, according to Port Authority records.
Hancock and Kushlan (1984) report that the Goliath Heron (Ardea goliath Cretzschmar, 1827), Black Heron (Egretta ardesiaca Wagler, 1827), Tricolored Heron (Egretta tricolor Statius Muller, 1776), and Black-crowned Night Heron
(Nycticorax nycticorax Linnaeus, 1758) also exhibit feeding territoriality.
The black-crowned night heron
(12 birds) was unusual for this area, as was the black phoebe.
argentatus), Black-crowned Night Heron
(Nycticorax nycticorax), Sandhill Crane (Grus canadensis), Guanay Cormorant (Phalacrocorax bougainvillea), Blyth's Tragopan (Tragopan blythi), Bald Eagle (Haliaeetus leucocephalus), American Kestrel (Falco sparverius), Broad-winged Hawk (Buteo platypterus), Cooper's Hawk (Accipiter cooperii), Merlin (Falco columbarius), and American Robin (Turdus migratorius).
According to Daphne Hatch, the park's wildlife biologist, in 1998 Alcatraz provided sanctuary for about 240 Black-Crowned Night Heron
and 15 Snowy Egret nests (up from just three the previous year).