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Our patients keep us very busy. There are
numerous hazards, both natural and man-made, facing our area's seabirds.
Below you will see a small sample of the problems we encounter.
Fishing Tackle
The vast majority of injuries we treat are
attributed to fishing tackle. Typically, these injuries fall into two
sub categories of (1) injuries with tackle present on/in the patient or
(2) injuries attributed to tackle with no tackle present. We recover
many seabirds with hooks engaged in, or fishing line wrapped around,
their body. These injuries can result in infection or injury to the body
and major organs. Birds entangled in fishing line may become entangled
in trees, or the line may pull tight and constrict blood flow to an
extremity. The second subcategory of injuries includes injuries that are
caused when fishing tackle tears away from the bird or is improperly removed by
the public. This includes torn pouches, deep penetrating wounds, ligature
wounds,
broken wings or legs and nerve damage. Seabirds sometimes dive on baited hooks and swallow the
fishing tackle whole. Roughly a quarter of the pelicans we treat have
ingested fishing tackle. The radiograph at left shows a pelican that
ingested one hook, a swivel and several inches of wire leader. These
fishing tackle injuries are fairly common in densely populated area like
Miami where seabird are in close physical competition with anglers.
Petroleum Products
While we only treat a handful of oiled seabirds each year, the number we
treat is slowly increasing. Oil contaminates the feathers and ruins
their ability to repel water and retain body heat. Oil also damages the
eyes, irritates the skin and damages the vital organs if ingested.
Caring for oiled seabirds is extremely difficult. It requires quick
response and extensive training. In South Florida, we typically see
handfuls of oiled birds immediately following large tropical weather
systems. Many of the sunken ships off the coast of Florida still contain
oil and fuel. Tropical storms and hurricanes sometimes disturb these
wrecks and release small amounts of trapped oil. This produces oil
slicks that pose a serious risk to seabirds like the Brown Booby
pictured at left.
Botulism Poisoning
Botulism is an illness caused when a seabird ingests food (usually fish)
that is infected with the bacteria Clostridium Botulinum.
Outbreaks of C. Botulinum occur in open water when algal blooms
reduce the level of dissolved oxygen in the water enough to allow this
bacteria to multiply rapidly. Botulism causes muscle paralysis and acts
within hours of exposure. Transfer Patients
Caring for seabirds in captivity is very
difficult because of their nutritional and physical needs. We therefore
receive seabirds that are transferred to us from other facilities for
prolonged treatment. We have received patients from other parts of
Florida, North and South Carolina and Louisiana. The pelican pictured
here with Harry and Wendy was transferred to our facility from
Newfoundland. He was the longest distance transfer we've ever had. He's
seen here just before his release.
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