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The following has been summarized from:
ORPHAN BEAR CUBS: Rehabilitation and Release Guidelines
by Dr. John Beecham, December 2006
Download
the full report
Occasionally, orphaned cubs are rescued from the wild and
placed in wildlife rehabilitation facilities. Bear cubs
weigh from 225-565 gm (8 to 20 oz) at birth and depend on
their mothers for 17 to 29 months. During this time, they
are subject to relatively high mortality rates, especially
if their mothers are killed.
Rehabilitation and release programs were originally established
as an alternative to euthanizing orphaned cubs or to maintaining
them in captivity for the remainder of their natural lives.
This issue has and will continue to be an animal welfare
concern for many people: they do not want to see orphaned
cubs die of starvation or kept in captivity under inhumane
conditions.
Rehabilitation and release programs also have a significant
conservation benefit. Of the eight recognized species of
bears in the world, seven are thought to be in decline in
all or parts of their historical range as a result of human
activities. Only the American black bear appears to be stable.
The successful release of orphaned black bears to the wild
has generated interest in starting rehabilitation programs
in many countries for rare species of bears. Rehabilitation
programs are providing bear managers an opportunity to use
information obtained from the release of orphaned black
bears to evaluate long-term strategies for managing small
bear populations, with no risk to those threatened or endangered
bear populations.
Rehabilitation programs have also provided positive educational
and public relations value to governmental entities charged
with managing wild bear populations.
However, release programs are not without some controversy
even within the conservation community. The significance
of the controversy ranges from disagreements about what
to call attempts to release bears to more important issues
regarding the survival probabilities of released animals,
the risk of spreading disease and parasites, competition
with resident animals and the potential for hybridization
within the recipient population.
Many human activities result in the orphaning of bear cubs.
Some of the more common reasons include commercial land
use activities, regulated and non-regulated hunting, weather
events, road/train accidents, abandonment as a result of
food shortages, and nuisance situations. Regardless of the
reason cubs are orphaned, wildlife officials face difficult
decisions in attempting to balance the public's concern
for the welfare of these cubs and their obligation as wildlife
stewards to protect the well being of native bear populations.
The four options wildlife officials most frequently consider
are to:
- leave the cubs in the wild to fend for themselves
- capture them and place them permanently in a zoo or
research facility
- capture them and place them temporarily in a rehabilitation
facility
- euthanize them
Rehabilitation facilities offer a viable option for wildlife
managers in areas where they are available. These facilities,
when operated by experienced persons, have demonstrated
that bears can be excellent candidates for release back
to the wild. Survival rates for orphaned cubs do not differ
substantially from those of wild cubs, and few animals (less
than 2%) become involved in conflict situations within one
year of their release. Studies show that released American
black bears have the ability to function behaviorally as
wild bears (when good rehabilitation techniques are used
to raise the cubs) evidenced by the fact that they become
reproducing members of the population.
An obvious advantage of placing an orphaned cub in a rehabilitation
facility is that the wildlife manager retains the option
of releasing the animal back into the bear population if
it is deemed a suitable candidate. Opportunities for raising
and releasing common bear species (i.e. American black bear)
also allow rehabilitators and wildlife authorities to develop
methodologies that may prove useful in the future, if intensive
management of threatened or endangered bear populations
becomes necessary.
A number of disadvantages are associated with placing cubs
in a rehabilitation facility, however. In many cases, the
cost of raising and releasing orphaned cubs is substantial,
although frequently it is borne by the rehabilitator using
funding from private welfare organizations, personal funds
and grants. A significant risk to wild bear populations
exists if care is not taken to ensure that all bears released
are free from disease and parasites. Two important factors
should be considered before releasing cubs: the status (age
structure) of the wild bear population in the release area,
and assurance that the area does not contain bears of a
different, distinct genotype.
Download
a list of bear rehab facilities.
For more detailed information on bear rehab, see:
ORPHAN BEAR CUBS: Rehabilitation and Release Guidelines
by Dr. John Beecham, December 2006
Download
the full report
- History
- Conservation Implications
- Options for Placement of Orphaned Bear Cubs
- Decisions about the Suitability of Cubs for Rehabilitation
- Rehabilitation Facilities
- Licensing/Funding
- Number and Sizes of Enclosures
- Construction Materials
- Escape Deterrents
- Visual Barriers
- Habitat Enrichment
- Denning/Shade Structures
- Characteristics of Orphaned Cubs
- Handling Methods
- Contact with Caretakers
- Health Issues
- Feeding
- Socializing Cubs
- Hibernation
- Release Site Considerations
- Release Site Approvals
- Habitat Assessment
- Land-Use Issues
- Topographic Considerations
- Predation
- Competition
- Genetics
- Disease/Parasites
- Ecological Issues
- Release Considerations
- Public Relations
- Ascertaining the Suitability of a Bear for Release
- Release Type
- Timing of the Release
- Tranquilizing Bears
- Marking
- Transportation
- Monitoring
- Interventions
- Evaluation
- Key Elements of Successful Releases
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