Category Archives: Biological Sciences

Incredible Innovation by Unlikely Bird

Many people know that cockatoos are quite intelligent animals – they can learn to talk, do tricks and even to manipulate their owners in order to get what they want. However, Figaro, a Goffin’s cockatoo (pictured below), has learned how to get what he wants without the help of humans.

Sam Mugraby via Wikimedia Commons

Figaro has invented and used stick tools in order to reach objects that he is unable to get using his beak or claws. While there are reports of tool innovations in corvids, a family that includes most of the mischievous birds, such as crows and magpies, it is unusual to fine these innovations in  other families of birds.

Figaro’s ability became apparent when he was observed trying to use a piece of bamboo to retrieve a stone that he had been unable to reach using his claws. Immediately after this behaviour was observed Figaro was visually isolated from the group and testing began.

When researchers placed cashew nuts on the outside of the cage, Figaro broke off pieces from a large wood beam with his beak and used them to rake the nut towards him until he was able to reach it.

Figaro can be seen working with his tools in this video documenting the experiment:

YouTube Preview Image via youtube user Sergeytule

The time for manufacturing of the tools showed a dramatic decrease across trials; while the first tool took almost 25 minutes to make, the tools used in following trials only took about 2.5 minutes

Unfortunately, not all cockatoos are as intelligent as Figaro. When testing Pipin, another male in the same conditions as Figaro, he did not try to use tools. However, Hiedi, a submissive female whowas left with Figaro during the experiment, demonstrated some of Figaro’s behaviours like breaking off pieces of wood and pushing them through the wire cage,  but she did not exhibit the same success at tool making.

According to Frans de Waal , a neuroscience and animal behaviour researcher, discovering these skills in even a singular bird shows that the general intelligence that cockatoos are known to possess can lead to novel, innovative behaviours.

It is not clear what the cognitive mechanisms underlying these innovations are, and it is not known if tools play a major role in the species’ ecology, but the evidence found from this experiment provides a basis for much more in-depth research into the developmental history and evolution of this group of birds.

– Miranda Marchand

Environmental Change: the Impact on Animal Species

Recently, there has been increasing evidence of global environmental changes such as rapid Arctic ice melting at an unprecedented rate and increasing carbon dioxide emissions. Rapid changes in environmental conditions cause large impacts on nature, including different species of animals.

What are some of these species affected by changes in their environment?

1. Carbon dioxide emissions have increased the acidity of oceans, thus affecting the SEA OTTER’s food sources– clams, urchins and abalones are unable to produce their carbonate shells.

A sea otter swimming Mike Baird via Wikimedia Commons

2.Warming, acidifying waters affect the CORALS because it causes destruction of their habitat and coral bleaching.  Bleaching occurs when zooxanthellae algae decrease in their photosynthesis pigments and fail to provide oxygen for the coral.   

Coral by NOAA Photo Library via Wikimedia Commons

3. One of the smallest whales present in the Arctic, the BELUGA WHALE, has a melon shaped head and a broad beak. Their abundance has decreased due to melting ice sheets and human intrusion by boats.

Beluga at Vancouver Aquarium taken by Stan Shebs via Wikimedia Commons

4. The KOALA BEAR acquires nutrients from EUCALYPTUS TREE leaves, however, increasing CO2 levels in atmosphere have affected the quality of the leaves being produced.

A Koala bear crawling by Thomasgl via Wikimedia Commons

Eucalyptus Tree by Jeantosti via Wikimedia Commons

 

 

 

 

 

 

So what are some steps that we can take to slow down the rate of environmental destruction?

We can decrease the use of energy and simply being aware of what changes are happening around the world. 

Losing any kind of species causes imbalance to the ecosystem and is not very good news for life on Earth. Though we cannot easily reverse the damage done to these environments, the steps noted above can definitely contribute to helping to lessen the amount of species extinctions.

-Candy KT Fu

Laughter is the Best Medicine?

Now I know, we’ve all heard time and time again “Laughter is the best medicine”, but where did this saying even come from? Is there any scientific backing to this?

Laughing child
(Picture from Pixabay.com, user Greyerbaby)

Well, turns out there is.

Dr. Lee Berk, an associate professor  at the School of Allied Health Professions at Loma Linda University, has been studying the effects of laughing, or humor, on the human body for years. In one of his experiments in the 1990’s, it was found that after watching something comedic, or funny, ones immune system created more t-cells, which are essential for fighting off infected cells in the body. Watching something funny and laughing ‘mirthfully’, as he describes it, helps to lower ones blood pressure, and improves the function of blood vessels.

It is also known that laughter releases endorphins in the body, which are neurotransmitters, responsible for the the ‘feel good’ chemicals of the body. Laughing also helps to relax muscles, and decrease pain.
YouTube Preview Image
Video: youtube user LifestyleMagazine08
Above is a video of an interview with Dr. Berk himself explaining his work, and some of his findings.

Researchers estimate that laughing 100 times is near the equivalent of using a rowing machine for 10 minutes, or an exercise bike for 15 minutes! Did you ever wonder why after a good long laugh you have trouble breathing, or your abdominal area hurts? Its because laughing is near the equivalent of an aerobic workout! Just make sure your laugh is a full and hearty one, fake and/or light laughter is not nearly as effective.

So next time you’re feeling under the weather, don’t mope about it. Pop in a funny movie and let your laughter help heal you!

-Christina Bell