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Procedures for rehabilitating and releasing oiled birds

The increasing success rate for treating and releasing healthy birds and returning them to their natural environment is the result of three decades of experience.

IBRRC is licensed by Federal and State agencies to work with native wildlife, and has been instrumental in developing procedures, protocols and techniques for the treatment of oil-soaked birds. This knowledge, gained largely through trial and error, has helped to increase the successful rehabilitation rate from three percent in 1971, when IBRRC was founded to up to 90 percent in 2000.

Treating and rehabilitating birds for eventual release involves proper planning, organization, administration, facilities, equipment and adequate staffing with professionals and volunteers. Oiled animals should not be treated or cleaned without proper facilities and trained personnel.

The following steps are taken when the public or organized rescue teams bring oil-contaminated birds to a treatment center.

Identification and Stabilization

Photo of Oiled Cooper's Hawk

Oiled Cooper's Hawk

All wild animals stress easily in captivity and oiled birds typically suffer stress from the effects of the oil, capture and transport. Before they can be washed they must be stabilized or the additional stress of the wash process could kill them. Stabilizing most oil-affected animals requires medical treatments under veterinary supervision and intensive supportive care for at least 48 hours.

At a stabilization center, trained staff and volunteers identify the species and a numbered plastic leg band is attached to the lower part of the leg to track each bird for record keeping during the recovery process. At the time of release, a stainless steel US Fish and Wildlife leg band will be used to identify and monitor the bird after release to its natural habitat.

When a bird arrives at the center, a thorough physical exam determines the condition of the bird and the degree of oiling. Frequently, oiled birds are debilitated either by the toxic effects of ingesting oil, or by exhaustion/starvation. The oil may cover only a small patch, or the bird may be totally soaked in oil. The bird is weighed, its temperature is taken and blood is taken from each bird and analyzed in an attempt to determine the internal health of the animal. This process is done periodically throughout the bird's stay. Immediately following its initial examination, it is fed a rehydration solution through a tube inserted into its stomach. The solution treats dehydration commonly seen in oiled aquatic birds, which can be life threatening, absorbs digested oil from the birds digestive tract, and flushes out the birds system.

Preliminary treatment and stabilization helps the bird regain its strength before the cleaning process begins. Each bird is housed according to each species’ specific requirements, and date of capture. The bird discouraged from preening itself and ingesting oil by being kept in a warm, quiet environment until it becomes alert and responsive, and ultimately, ready to be washed. An oiled bird is not able to thermo regulate their internal body temperature, so it is stabilized in a warm environment and monitored closely for signs of hypo- and hyperthermia. The bird is constantly monitored for stress, dehydration and disease, and is given intensive supportive nutrition and hydration therapy for at least two days or until it is strong enough to withstand the cleaning procedure. The bird is allowed to move about and behave normally in specially designed pens that minimize further damage to its feathers and body. The bird is not restrained or prevented from biting by binding its wings, legs, or beak.

Criteria for wash and rinse include proper stabilization, appropriate medical treatments, appropriate weight gain, excellent blood values, and normal behavior. The bird is not washed until it meets each aspect of these wash criteria. Because cleaning a bird can be life threatening, the goal is to wash each oiled bird only once, so it is crucial that it is healthy enough to handle the length of the washing ordeal.

Removing Oil From the Feathers

The product found through IBRRC testing to be the most effective at removing oil is Dawn dishwashing liquid.

Once the bird has been approved by the veterinarian to be washed and is moved to the washing area, a team of trained personnel begin the wash procedure. Because the experience is extremely stressful and can result in the death of the bird, only trained staff and volunteers oversee cleaning oiled birds. The bird’s entire body is immersed in a one percent solution of Dawn and warm water (warm enough to approximate the bird’s internal body temperature. Once wet, the bird is unable to thermo regulate) by one person while a second vigorously agitates the water into the bird’s feathers. A WaterPik filled with the same solution is used to clean the head. A soft toothbrush and cotton swabs are used to loosen dried oil around the head and eye area.

Photo of Pelican being cleaned

Pelican gets soaped down in tubs with 1% "Dawn" dishwashing liquid. (IBRRC photo)

When the water becomes dirty, the bird is moved to a second pan. The washing process is repeated as often as necessary and ten to 15 tubs are not uncommon. The bird is considered clean when the tub of water is clear and free of oil.

The bird is constantly monitored for any signs of stress during the washing procedure. If a bird exhibits signs of exhaustion or undue stress, the wash procedure is stopped by the team leader or veterinarian.

Rinsing the Solution from the Feathers

After wash, the bird is taken to a separate rinsing area where a special nozzle is used to completely rinse the solution from the feathers. The rinsing process is just as important as wash, because any detergent or solution left on the feathers can impair the natural waterproofing process even if all the oil has been removed. Specially designed spa nozzles are used that propel the water at sufficient psi to remove all traces of detergent from the birds feathers. Rinsing is done by a team of experienced rinsers who are able to determine when all the soap and oil has been removed from the feathers.

Drying and Restoring Waterproofing

After wash and rinse, the cleaned bird is placed in a protective net-bottomed pen equipped with commercial pet grooming dryers to dry the feathers. IBRRC does not condone the use of personal-use hair dryers, as they have been found to burn the delicate skin of aquatic birds. As it rests comfortably under the pet grooming dryer, the bird will begin to preen its own feathers back into place. The complete realignment of feathers in a tight overlapping pattern creates a waterproof seal.

The bird is tube fed a nutritious food mixture to assure proper nourishment, plenty of fluids, as well as vitamins and medications, and is allowed free access to food. Its progress is carefully monitored by medical personnel to assure continuing health and safety.

Preparing the Bird for Release

When the bird is completely dry and has adequately preened, it is placed in a warm water therapy pool where it continues to preen. It is closely monitored for floating/swimming ability, general alertness and observed for waterproofing. The bird may be swum in a warm water pool environment and placed under a pet groomer for several days to encourage preening the feathers back into alignment. After each swim in water, the bird is checked by trained personnel for wet spots on or under the feathers, an indication that rebathing or further medical treatments may be necessary.

When the bird has demonstrated sufficient preening and its waterproofing improves sufficiently, it is “graduated” to a cold-water pool. Cold-water pools are outdoor diving pools, where the bird can be in a completely water-based environment full-time, and can continue to feed, preen, and behave normally. The bird is monitored carefully by trained personnel and the wildlife veterinarian until it meets release criteria.

Release:

An oiled bird is released when it is completely stable, healthy, approved by the wildlife veterinarian for release, and when its waterproofing is determined to be flawless by highly trained personnel. An aquatic bird must be perfectly waterproof prior to release, because aquatic birds that do not have perfect waterproofing will not survive in the wild. The bird must exhibit normal feeding, swimming, and diving behavior, and have normal weight/blood values for their species. It is only released to an area not affected by oil that has been approved by State and Federal Trustees. Before release, the bird is banded with a stainless steel US Fish and Wildlife leg band. This allows identification and aids IBRRC in its research. Releases are usually made early in the day, during fair weather, so the bird can adjust to its natural habitat during daylight hours.

Also see:

Pelicans: Before and after cleaning photos

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