Alligators
usually follow a series of non-violent behaviors when interacting with each other.
But they are animals, not machines, just like we are. People, which are
supposed to be "civilized", may react
savagely if provoked in the right
way. The same can be said for any of our domestic animals.
Occasionally,
even alligators will react violently towards each other. It is foolish
to provoke any wild animal,
regardless of size or disposition. The
animals
have a right to live in their habitat, and humans can share it with
them if they take the time to understand the animals.
May 11, 2014
Mother's day.... At about 8am, I encountered an alligator in the
grass near the Spillway Trail. It had the carcass of a smaller
alligator in its jaws. I stayed near this alligator
all
day to do interpretation and to be sure people stayed clear of it. For
a long time, the alligator hardly moved at all. It moved up near the
trail (where I could get a good idea of its size),
and
only repositioned the carcass (by toss and catch) a few times.
When one
of our John Deere gators drove by, the alligator moved back towards the
water (but not into it), and then moved
back up towards the trail. This alligator has a unique arrangement
of
osteoderms on its right side. Three of them form an "arc", open at the
top. There is also a white lump that looks like a pebble just
above this arc; so the two conditions make this alligator
easy to
identify. Today's RICKUBISCAM image shows this arrangement. I've seen
this alligator in the vicinity; and it might have chased a female
away from its den.
I cannot find her, or her babies, near the den where
I'd seen them since last August. Then, it started chomping on the
carcass, and doing the toss and catch movement to reposition
it.
Another, smaller alligator came up from behind it, and slowly moved
towards the carcass held in the bigger alligator's mouth. It's only a
guess,but I believe that this motivated the larger gator
to start
trying to swallow the carcass. I was surprised to see the alligator
sling the carcass only once during the entire time (about 5 hours),
before the gator began swallowing it.
A
large group of people walked by on the trail about this time, and the
smaller alligator was intimidated enough to retreat into the slough.
So
the larger alligator started tossing and swallowing, and got in until
only the base of the tail to the tip of the tail was showing. But, it
couldn't continue, and slid backwards into the water and
briefly ducked
its head under. It might have done this to help lubricat the
carcass. Then it moved back onto land, and spit about half of the
carcass back out. Then, it began swallowing the
carcass again, and I
was amazed to see the ENTIRE carcass go down the alligator's
throat. The pictures are photos and frame captures from video clips I
shot during this activity. There are
two video clips, each one showing
the first or second swallowing attempt. The links are here:
First attempt: mp4 format Second attempt: mp4 format
One
week later (5/18/2014) I saw the same alligator cross the trail near
the other end of the spillway bridge carrying a tremendous bulging stomach.
Before it crossed, it lifted its
hindquarters slightly. An alligator
will sometimes do this just before it has to defecate. When I took a
closer look at this alligator, I discovered that it wasn't poop extending from the cloaca.
This is most likely a male
alligator, though I don't know why it was...stretching. One image
shows that odd arrangement of osteoderms, which identify it as the one
eating the alligator on
Mothers' Day. The next images show this
alligator crossing the trail, ; and the last image
is my "walking stick" lying directly on top of the tail drag mark. I
tried to stage the shot from exactly
the same position to compare the
length of the alligator with my walking stick. The stick is 6 feet long
(less 1/2 inch), and extends from the end of that exposed root, to the
edge of the grass.
The alligator extends past the stick on both
ends and could possibly be about....9 or 10 feet long.
June 16, 2013 I
spent most of today watching over an Alligator that was eating the
carcass of another alligator. The alligators had been moving around a
lot over the last few weeks. I
assumed that this was a 3 foot alligator
being eaten by an alligator about 9 feet long. For most of the day, the
alligator "rested", with the carcass in its jaws. However, it would
occasionally
try to shake the carcass, and sometimes it would "chew" on
it. The time between this kind of action could be from 20 minutes to an hour. The
alligator was in Pilant Lake, facing the trail.
I thought it might
possibly even cross the trail with the carcass; and enter 40 Acre lake.
But it never did. I remained by the alligator, keeping park
visitors from getting too close. Wildlife
doesn't CARE that you want to
take a picture of it with your celphone cameras with their lousy lens
arrangements. Stay BACK from the wildlife--at a distance that does not
bother it--and
everything will be fine. Leave the park and its sights
as you find them, so *other* visitors can enjoy the same things you did.
Shown
here are some of the images I could get, as the alligator repositioned
the carcass. Further examination of the carcass, I realized that the
original alligator was larger than I'd
originally thought. When
the
alligator repositioned the carcass; I noticed the cloaca. I saw
that
there was 10 to 12 inches of alligator in front of the cloacal opening,
and the tail was
intact behind it. It looked to be like half of an
alligator carcass; which was about 3 feet long. The rear legs and feet
were gone (they usually appear just in front of the cloaca). So...the
original alligator was possibly 5 or 6 feet long. The carcass had
no
strong odor, although flies were starting to land on and near it. A
close view of the jaws and teeth shows how they
don't penetrate very
far into a large mass. So, they can't cut very deeply.
As
these few pictures show, the alligator tried to swallow the carcass by
pulling it into its mouth by tossing and catching--then it would get it
to the opening of its throat. Then; it would toss
it back out, squeeze
on it, and occasionally shake the carcass. The alligators throat has
limited capacity--it can't stretch very far. The alligator's teeth are
not good for tearing much; or for
cutting. As I've shown on other
pages, an alligator will chew to break bones and weaken connective
tissues. If the prey is large enough to be stable while the alligator
moves it; then it will
try to twist-feed by clamping onto something and
spinning a piece off. If the piece is small enough, it is swallowed.
Otherwise, an alligator will work the parts, and if it can lift the
carcass,
it will shake it apart until it has pieces small enough to
swallow. A
complication is that other alligators recognise the violent movements,
and will come an investigate--and then try to steal
the prey. This is
why an alligator will sometimes leave the water; or move into a smaller
body of water--to avoid other alligators (on one of my pages); (or, as I've shown, other
animals
--like vultures). I have gathered many examples of alligators eating; and some of them appear one my web pages.
I
shot one high-speed video clip of one "lift, throw, and snap" movement,
a jaw clamp, and repositioning of the carcass, and an edited version is
here(mp4).
I have other examples of alligator prey
handling on my other pages. This one shows another alligator using the "prey whipping" fragmentation on a smaller alligator. And my page here shows examples of two different mammals
being fragmented. I left this alligator sometime in the
afternoon, when there was less human traffic. Throughout the day, park
visitors mentioned another alligator eating an alligator carcass
on the
other side of the lake, but I never went to see it. Later, I realized
that that carcass could have been the front half of this one--but I'll
never know. There are various studies of alligator
feeding mechanics
on the internet. This one describes how strong an alligator's esophagus
can be; and how it works. (Structure and function of the esophagus of
the American alligator
(Alligator mississippiensis) T. J. Uriona1,*,
C. G. Farmer1, J. Dazely1, F. Clayton2 and J. Moore2) And this one
describes "twist feeding" mechanics.(Death roll of the alligator:
mechanics
of twist feeding in water Frank E. Fish1,*, Sandra A.
Bostic1, Anthony J. Nicastro2 and John T. Beneski1) Both of these
studies were done using juvenile or immature alligators, and while
they
are detailed; they don't necessarily reflect what fully-grown
alligators could do.
March 17, 2013 I
started walking around Elm Lake at about 8:30am. The temperature had
gone up, and I expected to hear bellowing from some of the large
alligators that I knew were there.
Alligator mating season starts in
March. I was disappointed. Not only was there no bellowing, but I only
saw 3 alligators as I moved West on the South side of the lake. I was
near pier 6, and I
was looking at some visitors on it, when movement in
the lake made me turn. I just caught a glimpse of an alligator
giving something in its mouth one last shake before lowering its head.
I thought
the carcass was dark, so I just assumed it was a
Nutria. When the visitors got closer, I pointed out the alligator
described its condition, and we waited for the alligator to try chewing
again. I know
that we could possibly wait for 15 to 30 minutes for
this. And we did wait. And nothing happened, so the visitor and family
moved on. I waited, because I wanted to see what the alligator had in
its
mouth. The alligator moved to the far side of the island
(which was mostly submerged), but I thought it would be moving towards
the part of the island that was above water so it could eat. Eventually
it did move towards the high ground. I waited for an hour before
the alligator lifted its head high (at about 11am), only to rest again.
I took pictures anyway, even though the alligator was on one of
the
islands. I still couldn't tell what the carcass was. The island
was about 50 yards or more away, and even with binoculars, I couldn't
tell what the alligator had. I estimate the length of the alligators
to
be 8 - 9 feet. At 11:19. the alligator *did* shake the carcass but
only once, and I shot some photos and hoped for the best. I
waited for another hour, and noticed another alligator moving towards
the
first one. It crept closer and closer, moving towards the
carcass that was hidden behind the alligator's head. The alligator
suddenly twisted the carcass away from the interloper, then moved into
the water.
A short chase began and ended, and the alligator moved over the island with the carcass. I left. On
Tuesday I heard about some visitors that saw an alligator eating
another on Monday from a couple
different sources. I finally got
a chance to review my photos and video clips. It turns out that what
I'd been calling a Nutria was actually an Alligator carcass. It's
possible this was the same alligator that
was witnessed being eaten on
Monday. Below are some of images cropped from the pictures I shot.
___
___
And the next 3 images are screen grab sequence from this short video clip (mp4)
which shows the alligator trying to steal the carcass, and the short
chase. As it shows, the alligator with the carcass moved
away from me.
I have a lot of other information about alligators on my pages
featuring them. The first one is here.
Alligators don't like to share, and don't cooperate. But, when
one has a carcass and is
working on it, the movement and the smell can
draw the attention of other alligators in the area. As in this clip,
the "thief" alligator usually approaches cautiously, and doesn't attack
the alligator that has
the food. Instead, it goes for the food. The
reluctant "host" alligator usually tries evasion or bluffing
(thrashing, hissing) instead of a direct counterattack.
_
Brazos Bend State Park The main page.
Brazos Bend State Park Volunteer's Page The volunteer's main page.
Here are a few links to more information on alligators. There's a LOT of it out there.
Fish and Wildlife Endangered Species
And, this page shows alligators at the park, on land, near various landmarks at the park.
Go back to my main alligator page, Alligators
Go back to my home page, Welcome
to rickubis.com
Go
back to the See
the World page.