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California urges caution around coyotes after Inland Empire attacks

The increasingly bold animals have attacked 2 toddlers, in Lake Arrowhead and Chino Hills.


By David Kelly

Los Angeles Times
Thursday May 8, 2008


A rash of coyote attacks on children in the Inland Empire in the last week has led to the closure of a Chino Hills park, and wildlife officials are warning parents to be more cautious around the increasingly bold animals.

"People cannot be ambivalent about coyotes," said Harry Morse, spokesman for the California Department of Fish and Game. "When that coyote starts toward you, it's not coming to be nice."

Since Friday, two children have been attacked. In another incident, a coyote was headed for a toddler when it was scared off.

The most recent attack occurred Tuesday in Lake Arrowhead. San Bernardino County sheriff's investigators said Melissa Rowley was taking pictures of her daughter and three other children in front of their home about 11:45 a.m.

When she went inside to put away the camera, a coyote ran up, grabbed Rowley's 2-year-old daughter by the head and tried to drag her down the driveway.

When Rowley rushed the animal, it dropped the girl, who was airlifted to Loma Linda Medical Center and treated for cuts on her mouth and puncture wounds on her head and neck. Sheriff's spokeswoman Cindy Beavers said the girl was expected to fully recover.

On Friday, a 2-year-old girl was attacked by a coyote while playing in a sandbox at Alterra Park in Chino Hills. The girl's baby sitter heard a scream and saw the coyote trying to carry the child off in its mouth. She grabbed the girl and the animal retreated. The child suffered puncture wounds on the buttocks and was treated at a local hospital.

The next day, another toddler was approached by a coyote in the same park, but the animal was scared off by the child's father.

In October, a 3-year-old girl living near Alterra Park was bitten three times by a coyote that attacked while she played outside. The girl survived.


"Chino Hills and Lake Arrowhead are miles from each other, so I can't say the attacks are related," Beavers said. "I don't know if people are feeding these animals, but it's certainly very brazen behavior."

Alterra Park has been closed as trappers working for Fish and Game track down the coyotes. They have killed at least three in the last few days. One of the dead animals had an injured left foot, which fits the description of the coyote that attacked the girl Friday, authorities said.

"In the past nine months, five children have been bitten in that area," Morse said. "We have gone in there and killed 23 coyotes since December. We want to eliminate as many as possible because they represent a serious threat to safety. They are attacking children right next to their parents."

Morse said hunters working for Fish and Game spotted a coyote near the area where the Lake Arrowhead attack occurred, but it wasn't safe to shoot it.

Coyotes usually are trapped in snares and shot.

The animals roam the length and breadth of California and often prey on domestic animals. But there have been 111 attacks on humans since the 1970s, injuring 136 people, said Rex O. Baker, a retired Cal Poly Pomona professor who has studied coyote behavior.

"The coyotes we are having problems with are urban coyotes, which have lost their fear of man and have become dependent on man and his environments," he said. "We used to have programs to keep coyote populations low, but the mentality of people has changed and now they think wild animals are cuddly. They have forgotten that wildlife is wild."

Baker said there are about four coyotes per square mile in the wild but far more near urban areas.

In 1981, when a coyote attacked and killed 3-year-old Kelly Keen in the frontyard of her Glendale home, trappers scoured the area and killed 57 coyotes within a mile of her house.

Morse, of Fish and Game, said he didn't know what's driving the attacks, but they aren't the norm.


"These are predatory attacks, not just biting someone," he said.

"We are looking at whether it's related to breeding, denning or drought, but the simple fact is these animals are habituated to people and they have no fear."

david.kelly@latimes.com

http://www.latimes.com/news/science/environment/la-me-coyotes8-2008may08,0,2937854.story

Peregrine falcons in California's urban areas are contaminated with toxic chemicals


The birds were endangered by DDT in the '70s. Now, scientists have found that falcons in cities including Los Angeles contain record-high levels of flame retardant.

By Marla Cone
Los Angeles Times Staff Writer
Friday May 9, 2008

California's peregrine falcons, once driven to the edge of extinction by the pesticide DDT, now are contaminated with record-high levels of other toxic chemicals that may threaten them again.

State scientists have found that peregrines in Long Beach, Los Angeles and San Francisco contain the highest levels of flame retardants found in any living organism worldwide.

The findings parallel studies that have detected high concentrations of the chemicals, known as polybrominated diphenyl ethers, or PBDEs, in human breast milk, particularly in California women.

The compounds, which mimic thyroid hormones and can damage developing nervous systems, have spread to wildlife and people worldwide, working their way up food webs.

The concentrations found in California's urban peregrines are similar to those that cause neurological damage in lab mice and rats, resulting in reduced motor skills and altered behavior.

Scientists said the peregrines, the fastest and most agile birds, are being contaminated with the industrial chemicals from eating urban pigeons that scavenge on city streets.


The chemicals are used as flame retardants on electronics and furniture cushions. They begin as indoor pollutants, building up in household dust, then migrate outdoors, where they pollute urban environments.

Kim Hooper, a scientist with the state Department of Toxic Substances Control's environmental chemistry laboratory who led the study, said the PBDE levels in the peregrines have doubled every 10 years, and might still be increasing.

Hooper and his colleagues suspected that because household dust contains PBDEs, top predators in big cities would have the worst contamination, so they tested the eggs of peregrines in 42 locations, including Los Angeles, Long Beach, Newport Beach, Coronado and the San Francisco Bay Area.

Their hunch was right. The eggs in rural inland and coastal areas had only trace amounts of PBDEs, but the urban eggs contained up to 52 parts per million, and one dead chick contained 95 ppm. Scientists consider those concentrations extremely high -- substantially higher than nearly any chemical measured in any species worldwide in recent years.

"We think urban wildlife are sentinels for exposure to indoor pollutants in big cities," Hooper said.

Hooper said a PBDE compound called deca is largely responsible for the birds' contamination. Deca, used in electronics since the 1970s, is produced in large amounts in the United States -- about 80 million pounds a year.

The peregrine is known for its torpedo-like dives, reaching speeds of up to 200 mph. Hunting from skyscrapers in large cities as well as from steep cliffs in rural areas, they inhabit much of North America. They normally shun prey on the ground, choosing to capture birds mid-flight.

One bird egg, taken from the Port of Long Beach, had the highest level of any egg -- 52 ppm. Other birds with highly contaminated eggs had nested on high-rises in San Francisco and downtown L.A., including the Union Bank building. Included was a popular pair that San Francisco residents named George and Gracie.


"We're always concerned when a high level of contaminants is found in a species," said Alex Pitts, a spokeswoman for the U.S. Fish and Wildlife Service. PBDEs "are showing up everywhere and they are more concentrated in urban areas, which is challenging for urban wildlife."

Because the levels have been increasing, "it's very possible they could reach levels in the food web that could be unsafe for predators such as peregrine falcons," Pitts said.

Janet Linthicum of the Santa Cruz Predatory Bird Research Group, said the high contaminant levels are "disappointing and disturbing" but she has "no idea whether there are any effects."

The two dead chicks and 95 unhatchable eggs that were tested came from the Santa Cruz group's archive and had been collected at nesting sites between 1986 and 2007.

Avian experts say if a bird's nervous system is altered, it might change how it hunts and raises its young, and perhaps eventually reduce populations.

"Whatever happens to the peregrines, we will be surprised by it, just like we were surprised when DDT thinned eggshells," Hooper said.

A half century ago, peregrines, bald eagles and brown pelicans were nearly wiped out by DDT, an insecticide that weakened their egg shells and caused nearly complete reproductive failure.

Like DDT, the brominated flame retardants are slow to break down in the environment and build up in animal tissues, reaching high levels in species that top the food web.

PBDE levels in the birds' eggs are about a hundredfold higher than the amounts found in the breast milk of California women, who have among the highest concentrations of women tested worldwide, the scientists said.

Children are five to 10 times more contaminated than adults because they are exposed to more dust from playing on floors.

The recovery of the peregrine, known as the bird of kings because of its prized role in falconry, has long been hailed as one of the nation's greatest ecological success stories.


In the 1970s, its numbers in North America plummeted to about 300 breeding pairs, including only two pairs in California. But its populations have been growing since DDT was banned in the United States in 1972, and the bird was removed from the nation's endangered species list in 1999. About 3,000 pairs inhabit North America, including about 200 pairs in California.

California recently banned two PBDEs, known as penta and octa, because they were accumulating in human breast milk, but deca is unregulated in the state. It is banned or being phased out only in Maine, Washington state and Sweden. However, some large manufacturers of computers and other electronics have voluntarily stopped using deca.

Until recently, deca wasn't detected much in the environment. In this study, the state scientists are reporting that it contaminates the birds by breaking down into the toxic compounds that were banned.

"What's striking is that the peregrines are contaminated with the highest brominated ones, the deca, which had not been found previously at such high levels," Hooper said. "It may be time to look for green alternatives for deca."

Assemblyman Mark Leno (D-San Francisco), has introduced a bill that would ban all brominated and chlorinated flame retardants. Chemical industry representatives oppose the bill, saying deca is important to protect people from fires in electronic equipment and that there is little evidence that it is responsible for the contamination.

marla.cone@latimes.com

http://www.latimes.com/news/science/environment/la-me-birds9-2008may09,0,3682968,print.story



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