Fish scraps are deadly to birds, officials warn
About a dozen dead brown pelicans lay scattered on the rock slope walls below the fish cleaning station in the Crescent City Harbor on Friday.
Moving away from the fish cleaning station, the density of departed seabirds on the rocks lessened until there weren't any - evidence of the likely source of their demise.
Fishermen often feed fish scraps produced after cleaning their catch to seabirds looking for a bite. Seagulls can eat almost anything, but brown pelicans in the wild feast on smaller fish.
"We've dug whole salmon heads out of pelicans," said John Kelsey,
president of the Humboldt Wildlife Care Center, which has received more
than 20 ailing pelicans found in the Crescent City Harbor in the last
two days. "They eat whole fish in the wild, but they are only 4 inches
or so long."
Beyond choking on fish waste, pelicans can also be harmed by the fish
oil produced when cleaning fish, which prevents their feathers from
keeping them at their typical body temperature of 103 to 106 degrees.
When their feathers don't work properly, the risk of hypothermia rises.
The local pelican problem is exacerbated by a statewide trend of
starving juvenile brown pelicans crowding bird rescue centers up and
down the coast.
This appears to be a banner year for brown pelican offspring and
there may just not be enough food.
"Either a larger than normal number of young produced at Gulf of
California breeding colonies or decreased prey availability, or a
combination of both, is causing the young birds to have not enough food
to eat," according to a report by Keith Benson, fish and wildlife
biologist with Redwood National and State Parks.
Redwood Parks officials recently started noticing odd behavior in
pelicans typical of starving animals, like being lethargic and not
moving away from humans. Starving pelicans have been well documented in
southern and central California, and the trend will likely be more
apparent on the North Coast as the birds migrate north, according to
Redwood Parks policy is to let nature run its course if animals are
dying of natural causes, and visitors are advised not to feed pelicans,
which is against the law. Starving pelicans may even be a sign of good
news for the species that was once listed as threatened.
"Starving juvenile pelicans may be an indicator that the population
has reached ecological capacity and are fully recovered," said Bensen's
The pelicans ailing from careless fishermen's fish waste, however,
are less welcomed by the environmental community. And the hazard is even
greater this summer because ocean fishermen are having a stellar
"It's an entirely preventable problem so the frustration is running
pretty high these days," said Monte Merrick, whose organization Bird
Ally X, operates the Humboldt Wildlife Care Center.
A team from the center collected 11 pelicans on Friday from the
Crescent City Harbor and witnessed another 20-30 birds looking sickly on
an island nearby.
Some of the slow-moving pelicans have reportedly been harassed in
the harbor in the past week, with Humboldt Wildlife Care Center hearing
reports of at least six pelicans being run over by vehicles.
Reggie and Sandy Montoya of Crescent City have assumed the task of
informing fishermen near the cleaning station not to feed the pelicans
and to keep the fish waste bins closed off from the prying birds.
"I have to be here," said Reggie Montoya, who has worked at bird
rescue centers in the past. "I feel like I don't have a choice in the
Humboldt Wildlife Care Center has taken in more than 70 pelicans
since Monday, with about 20 from Crescent City, a few from Woodley
Island Marina in Eureka, and more than 40 from Trinidad. The center
constructed a 9,600-square-foot tent facility to handle the influx of
contaminated pelicans that came in last summer.
"We don't ordinarily treat this many patients," said Merrick, who
believes that the center will soon have more than 100 pelicans in its
care. "For this region, that's one for the record books."
The ailing pelicans have to be tube fed until they are strong enough
to handle a thorough cleaning to remove the fish oil.
The center estimates that it takes around $1,000 a week to feed the
The HWCC is accepting donations to rehabilitate the birds. For more
information, visit www.humwild.org.
Reach Adam Spencer at firstname.lastname@example.org.