Grizzlies have an amazing digestive system

Grizzlies are always hungry. It’s no wonder, because of a five month hibernation fast, they must go into the den at least 150 pounds over the weight from which they emerge. This large, aggressive omnivore (meat and vegetation eater) is in reality a very poor predator. Meat is preferred, but not often an option. As a result, the animal consumes a wide variety of food stuffs.

Their favorite food is ground squirrels, which they vigorously dig for. Other meat sources may include fish, newborn mammals, and carrion from winter kill. However, 70% of their diet is grass. It needs to be moist and at least 4 inches long because they graze with a sideways motion of the head. It’s interesting to watch them grazing on a hillside like cattle. Other foods are insects, buds, berries, nuts, and roots.

That hump between the shoulders is a massive muscle for digging, which they are masters at. They require a massive 24,000 calories a day, and their digestive tract is 80 feet long (10 feet for each foot of body length – humans have 4 feet for every foot of height). This great length of gut enables the digestion of a truly great variety of food stuffs. The bear is most aggressive when guarding a carcass, or when a sow is guarding her cubs. The bear is also very fast. Grizzlies can cover 50 yards in 3 seconds. My wife and I watched one ambling along, when suddenly the bear became alert and was off. It was amazing how fast that beast covered the ground and was gone!

Once, in a Canadian campground, I was sitting and reading to my wife. Our backs were toward the woods. A man came up the trail, on his way to the restroom. He asked if we had enjoyed our visitor. Evidently, a Grizzly had come out of the woods and sat behind us, unbeknown to us. It then, when seeing the man approaching, had returned into the trees.

 

Advertisements

FLASHES OF RED & BOBBING WHITE RUMPS!

If I could give another name to “Indian Summer” it would be “The
Time of the Flicker”. The late autumn months are full of much woodpecker
activity in our yard. Especially plentiful is our county’s largest one – the
RED- SHAFTED FLICKER (12 ½ inches long). It’s such an appealing bird with its
poke-a-doted belly, black chest crescent, and red moustache. When in flight, it
flashes the orange/red under parts of its wings and tail (thence its name) and a
conspicuous white rump patch.

As I step outside each morning in autumn, I’m greeted by these birds in
undulating flight – wings flashing color and that white rump patch bobbing up
and down as they scurry to a distant perch. The yard “teems” with an abundance
of these birds.

Flickers like open woodlands and suburban areas. Snags (standing dead trees)
or soft wood trees such as Aspen are preferred when drilling nest cavities.
Their long beaks and tongues facilitate the procurement of ants and other types
of insects – whether on or in the bark of a tree, or on the ground. They also
like fruit and we often see them feeding on our elderberry bushes. Their call is
a loud wik – wik – wik – wik and wick-er, wick-er, wick-er, and a single, loud
klee-yer.

The eastern variety (Yellow-Shafted) has yellow under-parts, a black
moustache, and a red crescent on the back of its head.

 

The Great Horned Owl – Fighter or Lover?

It’s mesmerizing to fall asleep, or awaken, to a soft hooting in
the early evening, or in the wee morning hours. Such is a common occurrence at
our house. These love calls begin in late fall and result in the laying of four
eggs in late winter. Incubation is started at once and results in separate
hatching times for each egg. This situation is known as a “stairstep” family and
whether all, or part, of the young are raised depends on the food supply. The
biggest baby is always fed first and it will survive even if the others don’t.
When the young fledge, they are ½ again larger than the adults. This allows for
an adjustment period when they are learning to fend for themselves.

The GREAT HORNED OWL is not only “tender” with its own but is very formidable
with others. They can take prey as large as a skunk and I have seen young cats
(in our yard) that have been torn in half. A smack on your head with their
talons could be very injurious.

They are identified by size (22”), a white throat, and ear-like feather
projections. They are quite adaptable and wide spread across North America and
are important rodent controllers. Mice and voles make up the lion’s share of
their diet. Other bird species will often “mob” them during daylight hours. Our
yard and lower tree plots are to their liking and we get to witness the raising
and fledging of young each year.

 

A bird in the hand equals two in the bush

By Dave Hanks 

Tiny little claws grasp and tickle my fingers. It’s a BLACK- CAPPED CHICKADEE – a small bird that is named for its call and black cap. If you are in the woods you hear the call “chick-a-dee-dee-dee”, it is unmistakably this bird.

We have two Chickadee species in Cassia County: the Black-Capped and the Mountain. The Mountain Chickadee is told from the Black-Capped by a white eyebrow stripe and is the more common in our county. Both prefer higher elevation woodlands of both deciduous and coniferous trees. They usually forage in the lower branches where they are often seen feeding by hanging upside down. When not nesting, they gather in huge flocks. They are insectivorous but will come to feeders containing seed.

As you can see, they can also be lured onto ones hand, perch on your camera, or even alight on your head. Following a Chickadee call can lead you to other species, which they tend to feed in a group with; such as woodpeckers, nuthatches, warblers, and kinglets. They may even lead you to owls that are sitting on their daytime roosts. These frisky fellows are a favorite winter visitor to bird feeding stations.

 

 

Our Neighborhood Kingfisher

I hear his “rattling” as he flies over our trees on his way to breakfast. Our neighbor has a large pond that is stocked with goldfish. The bird perches on a zip-line cable that is stretched over the pond. He watches below, plunges down and spears a fish, and then flies to a small bridge that leads to an island within the pond. He then smacks the head of the fish against the metal railing to kill it before ingesting it. Having observed this behavior, I set up my portable blind beside the bridge. I get in it each morning, before sunup, for most of a week. The “rattling” alerts me to his presence and I get ready for him to land on the bridge. This gives me the opportunity to get some good Kingfisher photos.

The BELTED KINGFISHER is a species in which the female is the more colorful. She has a rusty red belly stripe. They are 13” long and have a noticeable crest that looks to need “combing”.

They nest in burrows, dug in banks, close to fish inhabited waters. A short tail creates less drag as they exit the water after a dive. I became a Kingfisher lover from the time I first noticed one winging and “rattling” its way above Rock Creek, in southern Twin Falls County.

 

Mysterious Interloper

by Dave Hanks

In 2003 and 2004 I was called upon to identify a mysterious bird seen in the tall trees in the south-west section of Burley. I say mysterious because the species involved managed to stay hidden most of the time, or at least when I was called to observe it. After much searching and discussion of behavior, an unlikely visitor was identified. Unlikely because this bird is closely associated with marshes, where it nests. Because the river is within easy flying distance is the only reason that seems logical for this large wading species to be where it was sighted.

The AMERICAN BITTERN is 28 inches long with a voice that sounds like water gurgling. When alarmed it will stand in the sedges with neck stretched skyward, looking much like the reeds that surround it.

Immature Night Herons are also streaked and could possibly be confused with the bittern.

It is a hard species to approach and to get photographs requires a bit of luck.

Alligators have sensitive jaws

by Dave Hanks

It’s hard to imaging an animal that is so big and covered with armored skin to be sensitive to anything. Yet the skin around the top of the snout and along the jaws is more sensitive than our finger tips. They can detect touch that is too faint for our fingers to feel. Their most sensitive areas are in the gums along their teeth.

Cats of all kinds have sensitive whiskers and elephants very utilitarian trunks; traits that rival the gators sensors and help each species in their struggle for survival. These sensitive areas can allow animals to identify prey, or whatever they come in contact with.

Alligator jaws that can shut with a tremendously powerful force are, otherwise, weak enough that one could hold their mouth shut with one’s hands – a striking contrast between force and gentleness. The touch sensors allow a special gentleness when the female responds to peeping coming from her ripened eggs, which she carefully opens and then carries her new babies in her jaws to safety. Clumsiness would result in a lot of young ones getting accidently chewed up.

Alligators are more adaptable than their crocodile cousins. This has allowed them to spread farther north. They are top of the food chain predators that feed on a wide variety of animals: fish, amphibians, reptiles, birds, mammals, and even your dog. They shape habitats where they live by digging “gator holes” which can modify the wetness or dryness of an area. Other organisms benefit from these modifications.

 

gatortp

Resting and warming in the Texas sun