Top Ten Favorite Dinosaurs by Zack Neher (Part 5)

At long last, here we go: the final installment in my top ten list of favorite dinosaurs.  

1. Therizinosaurus

Therizinosaurus is the namesake of the odd group of herbivorous Theropod dinosaurs known collectively as the Therizinosaurs.  These guys are related to the Oviraptors, Ornithomimosaurs, and the Alvarezsaurs, all of which are thought to have a largely plant-based diet.  This seems odd when you first think about it: plant-eating meat-eating dinosaurs?  But similar things occur today.  For example, the order Carnivora today includes many meat-eating animals such as cats and dogs, but also includes the bears, where plants and berries factor into their diet a great deal.  For some, like the panda, they eat almost entirely plants.  The Therizinosaurs have been likened to the recently extinct giant ground sloths in the fact that they seemed to have pot bellies in which to ferment their food, as well as enormous claws that probably helped a great deal in protection, as these guys were most certainly not the swiftest of runners.  Therizinosaurus is just so bizarre and wacky, which is what makes it my most favorite dinosaur!

Top Ten Favorite Dinosaurs by Zack Neher (Part 4.5)

As some of you may know, right now, we are in the midst of a lis of my  top ten favorite dinosaurs.  However, on December 7th, a new dinosaur was announced, and it has immediately made my top ten list if it is, in fact, a dinosaur, which is currently being debated.  Therefore, I have decided to make this guy number 4.5 on my list, as if this creature is a dinosaur, it may very well be one of the most important finds in the history of dinosaur paleontology, as the find, named Nyasasaurus, may be the ancestor of all dinosaurs! Since this fossil dates to the Middle Triassic Period and is estimated to be about 10-15 million years older than the previously-oldest known dinosaurs like Eoraptor and Herrerasaurus, if this animal is not, in fact, a dinosaur, it resides very close to the base of the dinosaurian family tree!  People around the world eagerly await more remains of this animal from being discovered in Tanzania (where the original fossils were discovered in the 1930s) or somewhere else in the world, in the hopes that some more light can be shed upon this controversy.

 TO BE CONCLUDED IN PART 5

Invasion of the Great Horned Owls

Throughout my entire life, I had not seen more than a handful of owls in the wild, but in the last month (actually exactly a month ago today, on November 16th) I have seen owls on three different occasions, all three of which were great horned owls (Bubo virginianus), not to mention the two times that I saw the great horned owl parent and chicks at my grandparents house in the few months preceding that!  The largest owl of Central and South America and the second largest in North America (following the snowy owl), the great horned owl is actually closely related to the snowy owl, despite their very different outer appearances.  Despite its name, the "horns" on the head of the great horned owl are really just tufts of feathers.  The great horned owl is labeled as "Least Concern" by the IUCN. Also, this post is a birthday post for Joseph M. Roessler, happy birthday big guy!

One of the most notable features of the owls in general are their incredibly flexible necks.  Most birds of prey likes hawks, falcons, eagles, and vultures, have their eyes on opposite sides of their head.  Owls, however, like we humans, have binocular, or stereoscopic, vision.  This means that owls have to turn their heads a lot more than other birds of prey might in order to look all around.  In response to this, the owls have evolved the ability to turn their heads around 270 degrees, in either direction!

One of the great horned owls that my grandparents had in their backyard for a few months

Another interesting ability of the great horned owl, and owls in general, is their interesting method of digestion.  Birds nowadays don't have teeth, so they are unable to chew their food.  So most of the time, they (owls amongst them) swallow their food whole if they are unable to tear small chunks off of it.  This also means that the owl swallows the indigestible bits of its prey, such as the bones and the fur.  So after their meals, owls will regurgitate balls of the indigestible materials, colloquially referred to as "owl pellets!"

The great horned owl, more so than other owls, has an amazing crushing grip in its talons, around 300 pounds per square inch, which is more than the human hand is capable of!  There are also reports of cases in which the power exerted by the talons of the great horned owl matching those of much larger species of bird of prey, like the golden eagle.  The great horned owl is also capable of lifting prey that is several times heavier than they are.

What's on the menu for the great horned owl?  Where to begin!  Let's break it down by group, and give a few examples of each.  I am by no means including all of its prey items as that would take an immense amount of time. 

• Mammals
• Porcupines
• Skunk
• Domestic Cats
• Small or young domestic dogs
• Rabbits and hares
• Muskrat
• Squirrels
• Weasels and martens
• Shrews
• Lemmings
• Voles
• Bats
• Armadillos
• Mice
• Flying Squirrels
• Rats
• Marmots
• Birds: 
• Turkey
• Great blue heron and other herons
• Woodpecker
• Crows
• Pigeons
• Quail
• Gulls
• Ducks
• Other birds of prey, such as red-tailed hawks, snowy owls, and other great horned owls
• Misc.
• Young alligators
•  Amphibians
• Scorpions
• Worms
• Insects
• Crustaceans
• Centipedes
• Roadkill

Where did I see the owls?  The first one was exactly a month ago when my friend Masaki Kleinkopf and I were heading back from seeing the new James Bond movie, Skyfall, which was really really good (but not as good, in my opinion, as The Hobbit, which we saw last night and which was fantastic).  We decided to take the back way, the bird of prey route between Boulder and Superior where one can frequently see red-tailed hawks, kestrels, turkey vultures, and golden eagles.  Instead, we saw a great horned owl!

A picture of one of the red-tailed hawks that I took yesterday on the Bird of Prey Route.  Not only is it an amazing bird in its own right, but it is also potential prey for the great horned owl.

The next two sightings were actually yesterday and the day before.  The first one was when my other friend Mona Kamath and I were driving along West 120th Ave., and we saw a great horned owl perched in a tree!  Yesterday, on my way home from the Morrison Museum, I took a brief detour to see if the owl was still there, and he was!  Not in the same tree, but in another tree that was quite close by!  How exciting!  Enjoy the pictures! 

And remember, if you have a birthday coming up, just email me the date at cuyvaldar123946@gmail.com with the date and your favorite animal, and I will do my best to get a post in!  And remember, if you like what you're reading, make sure you LIKE US ON FACEBOOK, follow us (if you have a google or gmail account), or hit the subscribe button off to the right if you don't!

Zoo Babies: Lion Cubs at the Denver Zoo

On Saturday, my family and I went to the Denver Zoo.  We saw many awesome animals, but probably my favorite animals that we saw were the three new baby lion cubs!  Born in June of 2012, the cubs were sent to the zoo from Qatar, and will likely be shipped somewhere else once any long-term plans have been established regarding where they will stay.  For now, though, we get to enjoy the pleasure of these cubs, and now you can too!  Enjoy the pictures!

Hello there!

King of Pride Rock

The cubs look up as a HUGE flock of geese flies by overhead!  Nice timing, mother!  (That sounds like I'm being sarcastic but I actually am not.)

Ready to pounce!

Right before the goose flyover!

Master of all he surveys

More Squirrel Prints, Plus Some Bird Ones, Too!

As I MENTIONED YESTERDAY, we got our first real snow yesterday, and there were some squirrel footprints in our driveway.  After I made the post, when I got home, my father pointed out some bird footprints on the back porch, and this morning I saw some more, better squirrel prints on our back stoop.  I decided to share these cool prints with you as well, since squirrels and birds are quite rare in North America!  (Sarcasm).  The first two picture are of the bird tracks, and then all of the rest are from the eastern fox squirrel.

Bird tracks

I forgot the flash for this one, but I thought that the bird footprints still looked pretty cool with the green light coming from our back-porch light!

Your Dog May Be Dumb, But It's Brain Has More Folds Than a Cat's

When it comes to the anatomy of the brain, the more folds it has, the better.  This is because the folds create more surface area on the brain, which in turn creates more area for neurons to be, which in turn allows for more storing of information.  A month or two ago in my Psychology class, we briefly touched upon the brains of other animals.  I particularly remember the brains of the domestic dog and the domestic cat.  Even though it often seems, especially in my house, that my cat is a whole lot smarter than my dog, a quick look at the brains of both pets indicates otherwise.  The cats brain is pretty smooth in comparison to the brain of the dog.  If you think about the major differences between these two carnivores, one obvious difference sticks out like a football player in a group of people going to see the Hobbit premiere this weekend who are fully decked out in Lord of the Rings gear and are all Hobbit-sized: dogs are social creatures, while cats have a much more limited social capacity.  This probably helps to explain why your cat will suddenly and randomly bite you after you have been so lovingly petting her in your lap while she is purring.  They just don't know how to handle that much attention!  They also don't have any built-in social protocol.  Think about a socially awkward child: the situation is similar, except for the child it is simply that they had a different upbringing and not usually a matter of brain size.  Or maybe cats are just insane.

Anyways, as you can see by comparing the brains of the cat (above) and the dog (below), the dog has many more folds in its brain.  This makes sense, because the social interaction component would need more brain area to successfully function.

REAL FAST:  BELOW IS A HUMAN BRAIN FOR COMPARISON.

So with this in mind, it would make sense that the brain of the lion would be larger than, say, the brain of the leopard, now, wouldn't it?  Since the lion is a social animal, you would definitely think that.  This doesn't seem to be the case, however.  I did a little digging and couldn't really come up with much, but if I had to hazard a guess I would say its because the lion has the pride to fall back upon, so they don't necessarily need to be smart ALL of the time.  Also, leopards are extremely acrobatic, and spend a lot of time in the trees.  I suspect that this might also affect things, but I guess I don't know!  When I attempted to research it, literally all I could find was a bunch of Internet people comparing operating systems (?) called "Lion" and "Snow Leopard." 

Next we are going to compare the brains of the wolf and the red fox.  As you can see below, here our "Social Interaction=Big Brain" hypothesis is sound.  Not only does the wolf have a lot more folds in its brain, you can also see that the canyons created by the folds themselves are much, much deeper, which creates more surface area. 

Finally, let us compare the brains of the polar bear and the black bear.  HOLY.  COW.  As you can quite clearly see in the pictures below, the polar bear has MUCH more surface area on its brain than the black bear.  Now if you think about it, the environment that the polar bear is forced to survive in is much harsher than that of the black bear.  IN OUR POST ABOUT THE POLAR BEAR, we featured a video IN WHICH THE POLAR BEARS ARE PLAYING WITH SPY CAMERAS.  As the narrator points out, the curiosity of the polar bears is their "best hope for the future."  In their ever-changing world of ice and snow, which is now unfortunately melting, this curiosity is often what helps them survive the long, lean summers after the melting of the pack-ice, as well as the long, dark and cold winters.  Hopefully this brain power will be enough to sustain their populations in the future!

Top Ten Favorite Dinosaurs by Zack Neher (Part 4)

Part four of my Top Ten Favorite Dinosaurs list.  Enjoy!

2. Struthiosaurus

Just like Masiakasaurus, Struthiosaurus also lived during the Late Cretaceous Period.  Also like Masiakasaurus, Struthiosaurus was small.  But Struthiosaurus was small in a very different way than Masiakasaurus.  Remember when we talked about island/insular dwarfism in the context of the Channel Island fox?  Well, island dwarfism is back, in all of its glory!  A brief refresher, island dwarfism is what sometimes happens to animals that have become trapped on islands.  Over many generations, they shrink in order to match the limited food supply.  If there is a limited supply of food, then the smallest of your species, not the largest, are much more likely to survive.  Another factor that often helps island dwarfs is that predation is typically not as intense on islands as compared to mainlands, but that is not always the case.  Anyways, around 75 MYA, global sea levels were much higher.  In North America, we had the Western Interior Seaway dividing the continent, while Europe was simply reduced to a number of individual islands, one of which is now known as Hațeg Island.  And, if you are any good at guessing how stories end, you can probably see where this is going.  Yes, Struthiosaurus was an island-dwarf!  He is also really cool because he is an ankylosaur, a group of dinosaurs that are incredibly interesting!  Another thing that I absolutely have to mention here pertains to the picture of Struthiosaurus that we have below.  This picture was drawn by an incredibly talented young artist named Sam Lippincott.  Only in eighth grade, he is well on his way to achieving artistic greatness!  Below are some more pictures of his, all of them absolutely fantastic!  He made these pictures for my last lecture and I have the Struthiosaurus and Magyarosaurus pictures framed on my wall, I love them so much!  Let's all give Sam a round of applause! 

Struthiosaurus, an ankylosaur, by Sam Lippincott

Telmatosaurus, a hadrosaur, by Sam Lippincott

Magyarosaurus, a sauropod, by Sam Lippincott

Hatzegopteryx, a pterosaur, by Sam Lippincott

Europasaurus, another dwarf sauropod dinosaur, but from an island other than Hațeg Island

TO BE CONCLUDED IN PART 5