The U.S. Army Corps of Engineers (USACE) in its recent
Draft Environmental Impact Statement submitted its plans to kill 16,000 to
18,000 wild double-crested cormorants, about half of the largest cormorant
nesting group in North America. The colony is located on East Sand Island on
the Oregon side of the Columbia River Estuary.
The double-crested cormorant, native to the Columbia
River, is a black, fish-eating bird that stands about three feet high and
sports a wingspan of about four feet. Weighing approximately four pounds, this
bird eats about a pound of fish a day, or 25% of its body weight. They can be
found on rivers, lakes, reservoirs, a variety of wetlands, in the interior, the
Great Lakes, and on both North American coasts, where they range in their
migration and nesting from Canada to Mexico and the Bahamas in the East and
from Alaska to Baja in the West.
As fish hunters, cormorants are renowned for their
diving prowess, chasing prey as deep as seventy feet in their pursuit dives.
Biologists also recognize cormorants as dedicated parents, typically producing two
to three viable fledglings from each of their usual four-egg clutches. Once
reduced to near-extinction by DDT and other contaminants, cormorant numbers
have increased steadily since the banning of these chemicals by the EPA in the
early 1970s. In addition to their recovery from environmental toxins, as of 1972,
double-crested cormorants were protected by federal law and international
treaty under the Migratory Bird Treaty Act. Although seen as competitors and
persecuted by fishermen for centuries, even their most stringent detractors
admit that cormorants are resourceful
and clever birds that pose an array of challenges for wildlife managers.
On the West Coast's Columbia River Estuary, the
USACE built, and now operates and maintains, the four most downstream dams of
the river's fourteen hydroelectric facilities. The federal dams in total
provide 40% of the electrical power consumed in the Northeast. The Corps
therefore has an obvious stake, if not a conflict-of-interest in defending the
damming of the Columbia and power industry policies against criticisms levied
by conservation groups, biologists, naturalists, and individual citizens.
In the process of dam construction and operation,
the Corps drastically reduced the runs of wild salmon and steelhead
(salmonids), replaced their shallow-water spawning grounds with tremendously deep
reservoirs, killed millions of young outmigrating juvenile salmonids in their
turbines, polluted the waters with turbine lubricants, and basically created
East Sand Island on the Oregon side of the Columbia River from the rubble and
dredging deposits. Double-crested cormorants, along with
Caspian terns and gulls, soon colonized this ideal island nesting ground
situated squarely in the lower Columbia River Estuary, one of the richest
fish-holding basins on the West Coast. Before long, the double-crested cormorants
and terns, and particularly now the cormorant, through a haze of persecution
and ignorance, became the most obvious
culprit for the depletion of native salmon species, now on the Endangered
Species List.
To disguise the damage to the salmonids caused by
their dams, the Corps encouraged fish hatchery managers to flood the system
with pellet-eating, "domesticated" salmon, which had many of their
natural instincts bred out of them to facilitate hatchery cultivation and
handling, as well as quelling protests from commercial fishermen. The
combination of ideal nesting habitat and plentiful food supplies, including the
"dumbed-down" 2.0-versions of salmon, allowed the cormorants to
thrive and prosper and multiply to more than 30,000 nesting birds on East Sand
Island, arguably the largest cormorant nesting colony in North America. And
now, to protect the salmon initially threatened by installation of the Columbia
River dams, the Army Corps of Engineers has chosen to blame and slaughter a
large portion of the double-crested cormorant breeding stock on the West Coast
to cover its tracks. In its proposal, the Corps minimizes, dismisses, or
ignores the issues of commercial overfishing, the introduction of disease and
the genetic pollution of wild fish stocks with weakened hatchery breeds,
pollution from turbine lubricants and
other sources, climate change effects, spawning ground destruction, and
numerous other factors.
The 422-page draft impact statement filed by the
USACE, available on the Corps' website under missions and current projects,
offers action alternatives A through D, including (A), no action; (B), totally
non-lethal measures; (C), repeated annual lethal culling coupled with some
non-lethal measures; and (D), limited culling followed by non-lethal measures.
The Corps naturally chose Alternative C, calling for the shooting of 20.3
percent (4,000 birds) of the East Sand Island double-crested cormorant
population for each of four years for a total of just under 16,000 wild birds.
It also calls for a subsequent culling period of two to three years to deal
with new colonizing birds in order to keep the island population at 5,600
breeding pairs. The Corps claims that Alternative C is preferred because it
carries the lowest dollar cost and offers the most effective lethal follow-up
measures, while it dismisses non-lethal measures such as hazing and terrain
modification as more costly and ineffective, possible causing cormorants to colonize
other areas of the estuary (an unsubstantiated conclusion). In addition to
presenting concerns, speculations, and
suppositions as evidence, in its draft environmental impact statement the Corps
offers only superficial research with weak empirical data, which it applies
selectively to make its points
The USACE has an obvious stake in perpetuating the
myth of the cormorant as a gluttonous predator deserving little consideration.
This attitude harks back to the era of purging
wolves and other predators from the environment to satisfy greedy hunters
and ranchers, throwing predator-prey relationships out of balance, and causing
huge spurts in the numbers of destructive rodents, rabbits, and foraging deer.
Cormorants, as aquatic and marine predators, help to rid prey populations of
diseased, crippled, and weaker individuals, ultimately strengthening prey
species, and ultimately, the environment.
The Corps, as a relentless patron of commercial
development, also has a huge conflict of interest as a direct stakeholder in
the hydroelectric industry. Instead of striving to rebuild the salmon runs and
spawning beds, reducing mortality from turbines on the Columbia's fourteen
dams, reacting to overfishing, and protecting native salmon strains from genetic
dilution by domesticated hatchery fish, the USACE, came up with the familiar
misguided, self-serving solution typical of government agencies: kill the
cormorants.
The U. S. Corps of Engineers must be called to answer for their
cavalier attitude about slaughtering tens of thousands of protected wild birds.