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AS SEEN IN THE NOV/DEC 2007 ISSUE
Since
the very origins of angling, Florida’s many bird species have been helping
anglers locate their quarry. It’s time we do our part to insure our feathered
friends fish happily ever after.
Due
to its diverse habitat, temperate and subtropical climates and prime location
on migration patterns, Florida is a bird haven. There are approximately 500
documented species in the state including the majestic bald eagle, endangered
wood stork, protected snail kite and clumsy brown pelican. And although it may
seem like Florida's bird populations are strong, without proper conservation,
education and protection, they may soon be in jeopardy.
Any
angler will tell you that it is impossible to venture out – inshore or offshore
- and not have some level of interaction with wading birds, sea birds or birds
of prey. They are everywhere in nearly every coastal environment. And just like
the best fishermen are able to identify aquatic species and relate to what is taking
place below the surface, to maximize our time on the water, it would also help
to be familiar with what is occurring in the skies above. The first step to getting
fully acquainted with our surroundings is being able to identify the most
commonly encountered high flyers and getting to know a little bit more about
each.
Wading Birds: Florida's
wading birds begin breeding as water levels drop, fattening up as drying
marshes concentrate fish and other small prey. In previous years, Hurricane
Katrina and Hurricane Wilma wiped out some nesting areas, but didn't create a
mass abandonment. Since wading birds nesting dynamics are so closely related to
water levels, rain producing weather systems can drown out fledglings and flood
important foraging habitat. Although natural conditions have hurt bird
populations in the past, they are not the main cause of the decline. In the
late 1800s and early 1900s, several wading bird species were almost wiped out
by plume hunters supplying a craze for feathered hats. After a crackdown on
these hunters, in the 1930s and 40s, bird populations rebounded to exceptional
levels. Wading bird stocks were headed in the right direction until the early
80s when poor watershed management caused the populations to once again
decline. Although Florida's wading bird populations are once again on the rise,
they are not out of the woods yet, as nesting totals for the roseate spoonbill
and other vital wading birds remain below average.
The roseate spoonbill is the
only species of spoonbill found in the Western Hemisphere, and these remarkable
birds are closely related to the ibis. Unmistakable, they are deep pink and
have a long spatula like bill which they swing side to side, catching small
fish, shrimp, frogs, insects and crustaceans. Roseate spoonbills are very
social birds and often live in large colonies with other spoonbills, ibises,
storks, herons and egrets, and from March to October, spoonbills are most
prevalent along the bays, marshes, and estuaries along Florida’s Gulf coast.
During breeding season, which generally takes place from fall-spring, males use
gifts of nesting material to attract wary females. Once mated, the pair takes
turns sitting on the eggs and feeding the young. Like other wading bird species
with beautiful plumage, roseate spoonbills were once almost hunted to
extinction. Today, the only threat to these extraordinary birds comes as a
result of habitat loss.
Most commonly seen probing
with their long, down-curved beaks, white ibis feed primarily on aquatic prey,
including crayfish, crab, insects, snakes, small fish and various amphibians.
Easily identified by their reddish bill and legs, white ibis have all white
plumage, except for their black wingtips which can only be seen during flight.
Breeding colonies are most numerous in South and Central Florida, while the
largest populations have historically been in the Florida Everglades. These
birds nest in huge colonies, and researchers have counted approximately 70,000 individual
members in only one colony in Everglades National Park. Although it may seem
that the white ibis has no immediate threats, proper conservation of the
wetland habitats where they breed and feed is crucial to the future of these
incredible birds.
The great blue heron is a
familiar sight to most Floridians. While it has a white crown and face, the
blue heron is most notable for is dark plumage and long yellow bill. With a
wingspan up to 70 inches, the great blue heron is hard to miss. It is a
permanent resident to Florida's wetlands, and can be found throughout the
entire state, although less common in the Panhandle. Often seen foraging around
lakes, ponds, canals, piers and docks, blue heron are often the lucky
recipients of handouts from friendly anglers, although this practice is frowned
upon. When searching for food, heron utilize all types of wetlands, and can
even be found in some inland habitats.
Snowy egrets forage in both
salt and fresh water habitats, and are masters at stalking small fish,
crustaceans and insects. Adult's have small black bills, with long black legs
and yellow feet, although during breeding season, their appearance changes, as
the yellow area on their upper bill turns slightly red and they regain the
beautiful plumes on their backs. Snowy egrets usually nest with large numbers
of other wading birds in thick swamps and mangrove covered spoil islands.
Breeding only once a year, females lay three to five greenish-blue eggs which
hatch after only four weeks. Although once close to extinction, now protected
under the Migratory Bird Treaty Act, the snowy egret has bounced back and can
now be found throughout the state.
Sea Birds: With
thousands of miles of coastal and offshore marine habitats, Florida offers a
perfect destination for numerous sea birds. Florida is the saltwater fishing
capital of the world, and not only for anglers. Florida's sea birds feed almost
exclusively on small fish and other aquatic animals. Although these birds may
seem to have healthy populations, fishing line/hooks, pollution, natural phenomenon
and destruction of habitat all play a key role in the continued survival of
these important species. Fishing injuries are the most common and most often
devastating to these sea birds, as monofilament fishing line creates deep cuts
and tangles around birds legs, often causing severe damage. Pollution continues
to be a problem, however since the ban on DDT (a harmful pesticide), many of
these bird species have rebounded. Since Florida's sea birds most often prey on
small baitfish, years when the fish populations have not been prevalent have
led to many starvation deaths. Also, in the past years, El Nino conditions have
driven baitfish to deeper waters, further than these seabirds can dive.
The
double-crested cormorant is a large, dark water bird with a long hooked
bill, webbed feet, and orange throat pouch. Hardly ever found far out to sea,
the double crested cormorant prefers coastal estuarine habitats where small
fish and other prey are more abundant. Often seen diving for fish, anglers are
routinely amazed at the length of time these remarkable birds can stay
underwater. Because cormorants don’t have well developed oil glands, after
searching for fish underwater, they must dry their wings, and do so by
stretching out and posing in the sun. Cormorants are found along all of
Florida’s coastal habitats, but are less prevalent in the Panhandle. Often
known as the trash collectors of the bird world, cormorants make bulky nests
out of sticks, rope, plastic debris, fishnets, deflated balloons and other
trash material.
The brown pelican may very
well be the most common bird in Florida. Often seen in coastal marine habitats,
such as beaches and spoil islands, pelicans nest in trees on coastal islands in
large colonies and are most prominent along both the Gulf and Atlantic coast of
Central and South Florida. The brown pelican feeds primarily on fish, and will
take advantage of the most abundant available prey, whether it is menhaden,
mullet, threadfin, spot, sardine or anchovy. Although brown pelican occur year-round
in Florida, migrating flocks can be seen moving west in the spring and east in
the fall. Research has shown that Florida is a nursery for other states, and in
South Florida, nesting generally begins in the fall, while nesting in North and
Central Florida occurs during early spring. The brown pelican was classified as
an endangered species for many years, but has rebounded and is now only listed
as a species of special concern.
The magnificent frigate,
also commonly known as the man-o’-war-bird, is a large sea bird that occurs
regularly in Florida’s offshore marine environment. In proportion to their
weight, these birds have the largest wingspan of any other bird species, and
because they have such short legs and narrow wings, it is difficult for
frigates to take off from any structure that isn’t high off the ground. These
birds are typically oceanic, and spend most of their lives flying high in the
sky. With help from their long, pointed wings and forked tail, frigates can
glide effortlessly and routinely spend weeks soaring over open oceans,
searching for food. Frigates feed mainly on prey they can pick from the oceans
surface, but can also be seen pursuing other birds mid flight in an attempt to
steal their catch. Male frigates have bright red throat pouches that they use
to court females during mating season, and the reproductive cycle of frigates
is extremely lengthy. They lay a single egg, and the incubation period is
usually around 50 days. Additionally, the young fledglings are typically fed at
the nest by females for up to a year. In past years, populations of frigates
have been on the decline, mainly due to destruction of habitat and disturbance
of colonies. Over-fishing is also a problem for this bird, as fish is its
primary source of food.
Birds of Prey: Florida
is home to many birds of prey including the osprey, snail kite and bald eagle.
Destruction of habitat is their primary threat, because without proper
conservation of their critical habitat, these birds will have nowhere to nest,
feed and breed.
The osprey, also known as
the sea hawk, is a medium sized, fish eating raptor. Specially adapted to be
ultimate fish-hunters, osprey have short spines on the bottom of their feet to
help hang onto slippery fish. As most birds have three toes and one thumb, the
osprey is no different except that its third toe is specialized and can turn
around to enable extra gripping power. Osprey have extremely sharp talons and
strong hooked beaks for tearing into fish. Another beneficial adaptation is
that opsrey have oily feathers to help keep them dry after diving into the
water for fish. These large birds of prey prefer to build nests in dead trees,
because there are no limbs to get in the way of their wings, also it is harder
for predators to climb a dead tree without being noticed. When dead trees are
scarce, nests are often seen on top of power poles and channel markers. Because
they can tolerate a wide variety of habitats, and both nest and feed in any
location that is near an adequate food source, osprey can be found widespread
throughout the state.
The snail kite is typically
found in the tropical marshes and lowland swamps that occur around South
Florida. The snail kite’s beak is specifically designed to extract aquatic
snails from their shells, and although they may eat crustaceans, turtles and
small rodents when no snails are around, they primarily feed on freshwater
apple snails. Even though apple snails occur in North Florida, parts of Georgia
and Alabama, the lack of suitable forage prevents this bird form colonization
outside the Sunshine State. The snail kite is listed on the endangered species
list and is most commonly found in the Florida Everglades. An interesting fact
about the snail kite is that during breeding season, females often desert the
males and leave them to finish raising the nestlings. The females leave in
search of another mate to raise a second clutch of eggs.
The bald eagle is a large
raptor that can be found throughout the entire state, and 50 of the 67 counties
in the state have documented at least one active territory in the last five
years. The lowest number of breeding eagles are found in the Panhandle, while
the highest occur in the St. Johns River and parts of Everglades National Park.
Florida’s
population of bald eagles make up nearly 80 percent of the entire Southeast
population of bald eagles. These majestic birds of prey prefer to nest in large
pine or cypress trees that offer good visibility of the surrounding areas, but
in extreme cases they have been known to nest in low-lying mangrove trees.
Although many of the eagles that nest in Florida head north during the warmest
months, they return year after year to their established nests to repair and
enlarge the structures. Bald eagle nests may remain active for up to 15 years,
but are often taken over by great horned owls. Although bald eagles are no
longer endangered and have surpassed initial recovery goals, loss of nesting
habitat and increasing developmental pressure has put unwanted stress on these
amazing birds of prey.
In conclusion, as
individuals there is little we can do to stop coastal development and prime
habitat destruction. However, we can, in fact, each do our part to insure the future
health of all of Florida’s coastal bird species by never leaving anything
behind when venturing out in search of our next big angling thrill, properly
disposing all discarded fishing line in the proper receptacles, and not feeding
wild birds fish carcasses. Together, with just a little bit of effort, we can
make a difference! We owe it to the birds.
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