Well, it has been nearly 3 months since the last episode posted. In that time, I (Devon) finished my second degree (this one in Life Science Education), student taught, and–just about any day now–will be welcoming a second child into the world. Thank you for your patience! This episode is our mid-season finale. Over the next couple of months, Richard and I will be concluding the production on the second half of the season, concluding with a whopping two-parter that you won’t want to miss! For what the rest of the topics will be…well, you’ll just have to listen!
In the mid-season finale, Devon and Richard talk to Lucas Brotz, research associate at the Marine Institute for the Oceans and Fisheries at the University of British Columbia and a Cnidaria Scientist for Quantitative Aquatics, to discuss how a creature without a brain dominates the worlds oceans, and the many ways they impact our lives.
***Already, we realized that we made a mistake in the pronunciation of a certain word: planula—the free-swimming, ciliated jellyfish larvae which we pronounced plenuae. Whoops.***
As promised in the episode, below you will find some imagery and video clips to compliment some of what you will be hearing.
How Jellyfish Sting
Some additional reading:
As nature begins to expose its Spring twitterpation, we notice the appearance of an innumerable amount of birds who are coming back. They have the luxury of leaving the bitter cold to spend their Winters in the southern states while we work our jobs and live in our stationary way up north. There was, however, a type of bird (or should I say two) that stayed here and made themselves noticeable regularly. Am I saying that there are only two types of birds that stay north in the Winter? No! Obviously, this is not the case, but today we are focusing our efforts on learning about two of the most common and yet intelligent birds in nature. They are both black and giant in comparison to others. Today we are taking the time to appreciate the crow and the raven.
First, let’s talk about how to tell them apart. The most obvious way is by size. The common raven is much larger than the crow. It also has a much lower, croaky noise that it makes. It has even been known to say the words, “Nevermore,” in poetry, but has yet to accomplish this task in real life. Crows have a much more noticeable caaw.
Another way you can tell the beautiful birds apart is to look at who is near them. Often, ravens travel in pairs and have a longer middle feather in their tail. Crows are usually in larger groups (and are probably being loud about it or mobbing some poor soul that ventured onto their turf or gave them some side eye) with more of a fan shaped tail.
Now that we can tell them apart, let’s talk about what makes these common birds more interesting than the rest. These birds are so smart that they are known to make decisions, recognize faces, and solve complex puzzles and problems. They’re even one of the few non-human animals documented to exhibit secondary tool use, meaning they will make a tool and use that object to help them solve an additional problem. You may have heard not to anger a corvid (the family these birds are in) because they will remember you. They have been documented to honestly hold grudges and distrust even humans who have wronged them in the past. When you are on hikes, remember to respect these birds (as well as all other wildlife).
With more interesting facts on these birds, here is Devon, the biggest bird nerd you and I know:
Ravens are one of my all-time favorite birds. They are incredibly intelligent, ranking up there with chimpanzees, dolphins, and even young humans. They can solve puzzle, hold grudges, play, cooperatively hunt with predators like wolves, mimic speech (sometimes better than parrots), show empathy, and even give gifts.
Crows are quite similar (I mean, obviously, yeah. But you get the point!). They are also incredibly intelligent creatures. In a UW study, crows were shown not just to recognize a face, but to hold a grudge and communicate with other crows to warn them of a masked individual. They also are incredibly adept at solving puzzles and have been documented to use cars stopped at stoplights to crack nuts open.
This is merely a sample of the wonders of Ravens and Crows.
We will continue to focus our Tuesdays on common wildlife that we take for granted. Remember to appreciate the small stuff. How on earth can you appreciate the other wildlife without it? The appreciation of common birds and more urban wildlife is more realistic to our current way of life. Recently, I was watching Adam Ruins Everything, and he actually addresses this notion that I am trying to push in TWL Hiking Club. I recommend the episode to all of us who regularly use nature or our enjoyment.
It’s that time of week again to talk about animals that we often overlook but are seriously just as, if not more, awesome than other animals. This week, there are no wolves or bears involved, no! We are talking about the adorable little shrew.
You have likely seen many shrews in your time on this planet. They look like mice who lie a lot because their noses are so long. These mammals are brownish-grey, and smaller than a deck of cards. When I see them, I am usually in a grassy, prairie location. That doesn’t mean they only live in these areas. They are found all over the place. There are also many different species of shrew.
One thing that makes the shrew stand out is how frantic it is. You won’t see this tiny little mammal standing still for very long. They are incredibly quick, and I have even seen reports that say they have superquick heartbeats. You likely would not be able to catch one unless you really tried. In all honesty through, you don’t want to catch one anyways because they’re vicious little creatures. There are even a couple of species that have venomous bites. Y’all, these creatures can take down snakes! Even the ones that are not venomous, which is most of them, have vicious bites that have been known to cause harm. Don’t touch them.
On a more positive note, screws are a lot like bats in that they can’t really see, but they still need to find a way to find food and to find their way around. Some species of shrew actually use echolocation to find things but most of them just use their whiskers. Honestly, I don’t really know how whiskers work so here is Devon talking about why they are awesome:
Hey, everyone! Devon, here. So, whiskers, also called vibrissae, are tactile sensory organs that are embedded deeply in the skin of most mammals. The follicles of these extra thick hairs are rooted in an area dense with blood vessels and nerves. When the whisker is touched or vibrates, it vibrates down to the nerves which transmit information to the brain in much the same way as typical touch. The type of whiskers that grow from the face, like on cat or a shrew, are especially helpful for allowing an animal to better “see” in the dark. They also help to indicate how narrow a space may be, such as a tunnel or small opening an animal may be tempted to navigate. Okay, back to Chelsea.
I would like to conclude with what the most bizarre or interesting aspect of the animals existence is. This week as I talk about the shrew, I want to end with the fact that some of them… Many of them… Are able to actually walk on water. There aren’t very many animals that can do that. So yes, let’s continue to obsess over the predators and raptors of the woods, but don’t forget about the little screws that are under our feet. You may not even realize they are there. But remember, although they are cute, they are vicious, and that’s what makes screws awesome.
This #SundayFishSketch comes from Ichthyologist, Rene Martin. Visit her shop on InPrint to see more of her artwork or to order prints!
Yes, you read the headline correctly! TWL Hiking Club Tuesdays are back! I have taken a break as the snow has taken over our lives in Minnesota. There are many people who embrace the snow here, but honestly, as of right now at least, neither Devon nor I are one of these people. As Spring is about a month away from beginning, we are excited to get back out on the trails and really appreciate what nature has to offer. This brings me to what our next several Tuesdays will be focused around: appreciating the nature. Of course I mean we can love and appreciate the raptors who swoop, the predators who stalk, and the more rare moose sighting. But! That is not what these will be about. So often, we ignore the more common wildlife sightings even though they are some of the coolest animals. I will be focusing on them and bringing the more urban of wildlife into focus.
Today, we focus on the oh so common mallard. This is the duck that you and I know so well. The females are brown with the little streak of color, and the males have the iridescent green and deep navy blue. You know what I am talking about. They frequent local and distant ponds, lakes, and rivers. They are beautiful. If you live in America, I can guarantee you have seen a mallard. Many of us see them all the time and do not take the time to truly notice just how awesome they truly are.
What is cool is that almost all domestic ducks come from this species. If you eat duck, you can most likely thank the mallard. I know… I know… who could eat a cute creature like a mallard? Many people do, and it really is an animals whose species can take it. Additionally, they are a lot like humans in that they tend to be monogamous, but that isn’t always the case! Speaking of breeding, the males have an intense reproductive system that essentially works like a corkscrew. Talk about survival of the fittest!
When we think about animals, we often consider them with short life spans. Well, some mallards have been documented to live to their early twenties! They could live long enough to get college degrees, people! Tell me that isn’t awesome! How can one simply walk past a group of mallards without admiring them knowing this fact! I know I can’t!
PS–there bills look like tiny yellow dog masks.