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.
6/02/2024 In
Brazos Bend State Park, as I was on the Spillway Trail,
near Elm Lake, a few very loud, deep bellows came
from somewhere ahead.
The bellows were only repeated twice, so I had trouble
catching up to the gator. A couple small gators bellowed
closer, but I passed them because I wanted to find the
male that was bellowing so loudly. There was a large gator
at the edge of Elm Lake, about 20 yards North of the end
of the Spillway Trail. It wouldn't bellow while I was
watching and waiting. While
I waited for it to bellow again (it didn't), I heard what
seemed to be violent splashing from many yards away.
I thought it could have been Coots
arguing. And then I heard it again. And
again. Each time, there were just a few splashes, then
silence. I thought it might signal some kind of
alligator activity, but I wanted
to see this gator bellow. (It didn't.) After
one of those splashes, the large gator I had been watching
seemed to respond. It turned towards the sound, started
moving North
and submerged under the mats of hyacinth. All
of the events I describe here are also shown in this edited video.
I looked for the splashing. I thought the big gator might
head that way too--but I didn't see it. I walked
carefully. If splashing was an alligator with prey, or
alligators fighting,
or alligators fighting over prey--then one or more
alligators trying to leave the situation might suddenly
appear in front of me on the trail.
I found two alligators locked together. Both were at least
6 feet long. One had its jaws clamped tightly over
the head of the other and they were right next to the
bank. At first
I thought that one of them was dead. But
they were both active. As is usual when an alligator has its
jaws clamped on something, there were periods of relative stillness,
with
brief periods of quick and violent action. They can drown prey,
but drowning another alligator could be difficult. Then the submerged
gator moved, and pulled against the
one above. The lower one was anchored on the shore, while the other
one was partially floating. So, there were two live alligators for
sure. What was going on?
When the alligators thrashed again, I could see that each alligator
had its jaws clamped on the jaw of the other. That is, one alligator
had both jaws clamped on the upper jaw
of the other--while the other had both jaws clamped on that
one's bottom jaw. Sometimes an alligator will "thrash" a carcass, by
violently shaking it side-to-side, or by pulling
it with a sharp jerk. If the prey is small enough, it is lifted and
cracked like a whip until it breaks into pieces. One or both gators
lifted and thrashed. Since both sets of jaws
were clamped together, there wasn't much damage. Please note that I am
shooting with telephoto/zoom functions on the camera. I'm at
least 20 yards away from the alligators
I show here. There was also another gator grunting/croaking from the
West side of the trail (which was behind me), so I watched that side
also--I couldn't see that gator.
Twist feeding (rolling) is a reflexive action that alligators do when
their jaws encounter resistance. It can be used to drown or
subdue live prey, or pull pieces from a large
carcass. Here, both alligators could use the technique--and could work
against it. They
both seemed to be about the same size, so were evenly-matched. When
twist-feeding
in open water the tail is used by twisting angled to the main axis of
the body. ("Death roll of the alligator: mechanics of twist feeding in
water" by Fish, Bostic et. al. 2007)
In shallow water, or on land, the tail used as a bit differently.
Here, neither gator could generate power; and each interfered with the
twisting of the other. There seemed to be
some "cracking" sounds. It could have been from hard surface
contact, or possible stress in the skull and jawbones. Both gators
remained stoic throughout this conflict. This
stoic, deliberate approach to survival is one of the things I admire
when I watch alligators. I show some old examples of twist feeding and
prey thrashing on
this page.
I thought I was scheduled to work at the Nature Center, and it also
looked like it was going to rain soon--so I couldn't watch for very
long. I hoped to see a resolution to this
conflict with neither alligator seriously harmed, but was very curious
how this would end. I've seen other conflicts like this resolve in a
draw. While I watched this apparent
stalemate, I also wondered what had started this. I will never know
for sure. The alligators have never told me what they're up to.
My desire for a quick and nonviolent resolution soon fulfilled--but in
a very surprising way. An alligator larger than the two combatants
(probably the one I'd been watching
earlier) surfaced from under the hyacinth. It cruised slowly towards
the two combatants. It maintained this majestic pace until it was
within touching distance of the two.
The "top" gator quickly opened its jaws (upper jaw was lifted off the
other's head), but could not disengage because its lower jaw was still
trapped by the other alligator.
When the Big Gator moved in and gave a gap-jawed nudge to the two
heads, the "bottom" gator released its grip. Then one quickly moved
away and swam to the deeper water,
while the other moved towards the bank. The rapid movement indicated
in the images below is only from the retreating alligator as it moved
to the deeper water.
The Big Gator moved away from the one near the bank, and turned to
face the gator in the water, as if to guard the gator on the bank. The
other alligator kept moving away.
The Big Gator turned around and moved towards the one at the shore, as
if to guide it to the bank, and watched it climb onto land. The Big
Gator moved slowly, with no
apparent aggression. It seemed like the big gator had been
protecting the alligator on the bank. I had to leave, so I
couldn't see what else happened. I have recorded two
other examples of alligator conflict: In 2012, I found two alligators
that had grabbed
each other by the hip. In 2022, I saw a fight from beginning to end.
02/12/2023
At Brazos Bend
State Park, the air was cool, but the sun was out.
As the day progressed alligators showed themselves
and moved out of the water.
Even though the air was relatively cool, exposure to the
sunlight allowed them to collect the infrared and heat
themselves. Circulating blood warmed by the sun from the
skin and osteoderms
into their bodies as the cooler blood was cycled back out
would allow, over time, the alligtors internal temperature
to rise higher than the air temperature. One of our
frequent visitors told me
about an alligator with an alligator's carcass in Elm
Lake, so I went to see it. The pictures below show that I
found it.
Unlike from what the popular media might imply, an
alligator eating an alligator carcass is not that
uncommon. I usually tell visitors that although we are
seeing an alligator eating an alligator
carcass, it doesn't necessarily mean that the carcass was
killed by that alligator. It could have been; but most
gator fights usually just end with one submitting and
escaping.
Large animal carcasses require extra effort for an
alligator to process. Alligator teeth are not very good
for cutting prey, so they have to spend a lot of time
chewing a carcass to soften it and
weaken connective tissues until the prey can be shaken
apart. Alligators carcasses are especially tough, with
extra bones and strong skin. Some of the close-up
images attached show that
the teeth have not penetrated the skin of the carcass.
In some cases, an alligator carcass is swallowed in one
piece, without shaking it apart. I have an example of that
from Mother's Day in 2014, on this page. Comparing the size of
this carcass
and the live gator, I think it might be possible for this
one to consume the carcass if it crushed the skull.
From BBSP on 05/29/2022
Water level in Pilant Lake has been receding, due to trail
construction, lack of rain, and the heat. The receding water
is collecting
into various runoff areas and puddles. As I have observed
before, various predators at BBSP exploit these spots for easy
prey capture. However, an alligator will sometimes
try to take possession of one of the small hunting zones and
chase off other birds and alligators. Sometimes the submission
or chase doesn't go as the aggressive alligator desired,
and a fight could occur. The series of photos below show such
an incident. The gator on the left was moving upstream,
while the other gator had been moving downstream. Both had
been foraging in the slow current formed as the water was
leaving from Pilant Lake.The left gator stopped, submerged and
turned away--all signals of submission. I've put these images
and the clips I filmed in to this video file (mp4). (video
uploaded 6/20/2022)
While the gator was submerged,
the aggressor gator moved toward it. When the left gator
surfaced, the aggressor moved towards it.
There was a short chase until the left gator was caught at the
bank. Then the wrestling started. During the first round, I
heard two very loud "cracks". When I reviewed the video,
it appears
that their heads banged together to create those sounds.
That's shown in this video file
(mp4) (video uploaded 6/20/2022)
They wrestled, paused, and wrestled again. Look at the
heightened body positions and the gapes of the two angry
alligators. These postures signal high aggression. These
were the only
postures or sounds during this entire event. No snout
lifts, tail arches, tail swishes, head-slaps, growls, grunts,
bellows, nasal spray, or bubbling. Their backs were higher
above the water
than usual, but this was because they were walking/moving
through shallow water. The aggressive alligator (the
"insti-gator" ha ha) only started this by moving closer
to the other gator.
They
wrestled,
paused, and wrestled again. I stayed a safe distance
away, in case whichever one lost decided to escape by running
onto the trail. Some of these images were direct photos,
and some are frames from the video. The last two below
are from video frames. The gator in the foreground has a large
gash just behind its head. This gash would have probably been
worse if not for the alligator's osteoderms. The osteoderms
are the disks of bone arranged in rows on the alligator's
back. I've seen many studies and reports have been done
about them,
and their probable benefit for crocodilians that have them.
Each single osteoderm is a complex mechanical object with
amazing structural strength. Rows of them on the gators' backs
make
a structure that gives protection and allows flexibility.
But along with the armor (which is probably used mostly
in situations like this) the osteoderms also give additional
skeletal
support during movements like high-walks. The osteoderms have
enhanced blood supply internally and externally. This
may help with heat transfer. If submerged for excessive
periods, the
osteoderms could help regulate lactic acidosis; and also
provide calcium for egg-laying females.
After
the
second "round", they moved apart and went downstream with one
of them (I assume the original aggressor, but I lost track
while they wrestled), continuing to get close to or in front
of the other. The "loser" tried to swim away, but the
"aggressor" continued trying to get in front of it. They
finally moved off.
And, this page shows alligators at the park, on land, near various landmarks at the park.
Go back to my main alligator page, Alligators
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back to my home page, Welcome to
rickubis.com
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the
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