Top 10 Animals That Will CHANGE In Your Lifetime
Welcome back guys, my name is Danny Burke.
Animals are a fascinating topic that weve talked a lot about on this channel which is
why I think youre gonna love today's video.
Animals evolve to better suit their environment - in this age of climate change and human
expansion, environments are changing fast and many animals are changing before our very
eyes.
This is the Top 10 Animals That Will Change In Your Lifetime …
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to get your own, right after this video!
Coming in at number 10 we have The Hipster Birds.
Thats the nickname that is being given to some birds in Australia that are changing
to make themselves heard in big noisy cities.
A team of researchers recorded birds across a variety of urban and rural environments
to see if there was a difference in the frequency of their songs.
Calling and songs are a key part of male birds defending their territories and attracting
female - its bad news if they cant be heard over the noise of a city.
The results were surprising, on average, city birds were singing 195 hertz higher and calling
90 hertz higher than their rural counterparts.
As cities get even more busy, you may start hearing incredibly loud birds as they attempt
to make themselves heard …
At number 9 we have the Supermouse.
As long as humans have lived in large groups, mice and rats are never too far away.
One of the prefered methods of getting rid of them for many years has been poison - but
that might not always work anymore.
Scientists recently found a supermouse hybrid in Germany.
It was a genetic mix of the ordinary house mouse and its poison resistant cousin - the
Algerian mouse.
The result is a mouse that is perfectly adapted to live in our homes but is resistant to Warfarin
- one of the most common poisons used in rodent control.
The research teams lead author Michael Kohn said -weve caught evolution in the act- … great,
now they just need to catch that mouse.
At number 8 now we have the Tawny Owl.
This is a common owl found across the forests of Europe and their colour ranges from brown
to pale brown, grey or even white.
The white and grey helps them blend in with snow and hide from predators.
Researchers in Finland noticed there has been a nationwide increase in more brown coloured
owls over the past 48 years.
In that same time, the winters in Finland have got a lot milder.
If its warmer, theres less snow which means the whiter owls are more easily spotted by
predators against the backdrop of a browny green forest.
If this continues, we may only see brown Tawny Owls in the future!
Moving on to number 7 we have the Bed Bug.
Bed Bugs love us - they feed on our blood and live in our beds, hence the name.
Pesticides are used to kill them and have helped us keep them under control for the
most part - but theyve started changing.
One study in America found that bedbugs in New York, a place known for its infestations,
are now 250 times more resistant to pesticides than bedbugs in Florida.
It only takes a few to be naturally resistant and survive for the whole population to end
up resistant.
The more chemicals we use on bedbugs, the tougher they become.
This sounds like the plot to a movie.
A bad one.
Next up at number 6 we have the Green Lizard.
Floridas native green lizards have traditionally been found living on low branches and trunks
of trees - that was until brown lizards moved into the area in recent years.
Suddenly, there was half the food available and double the competition.
So, the green lizards climbed to the treetops to survive.
They needed to adapt to better cling to the smaller, smooth branches in the tree tops.
Their toepads grew bigger and their scales got stickier to achieve this and it all happened
in just 15 years - about 20 generations.
Scientists were shocked at the degree and quickness of this evolution are are curious
to see what will happen in the next 15 years …
At the number 5 spot now we have Pink Salmon.
This fish swims from the ocean and up freshwater streams to spawn the next generation.
Some migrate earlier than others, its all decided by their genes.
Scientists noticed that in Alaska, one salmon population was now migrating about 2 weeks
earlier in the year than it was 40 years ago.
Scientists looked at the data over that time and realised that fish with genes for late
migration had all but disappeared from the population.
Over that same time period, local water temperature had increased by 1 degree celsius due to climate
change.
Scientists argue that these early migrating fish are better fit to handle the warmer waters
- and this change will only continue as temperatures increase …
Next up at number 4 we have the House Finch.
In Tuscon Arizona, house finches have developed longer and wider beaks than their rural cousins
so that they can more easily consume sunflower seeds in bird feeders.
This is an interesting thing to observe in animals - when they begin to adapt to better
suit a human made environment.
If this trend continues, you may end up with House Finches perfectly designed to live in
neighborhoods and almost exclusively feed from birdfeeders with their perfectly shaped
beaks.
At number 3 now we have The Mosquito.
The London Underground is the oldest subway system in the world, over 100 years old in
fact.
In that time, many creatures have grown to call it home - including mosquitos.
The mosquitos that live here have been so isolated from mosquitos on the surface that
they have almost become an entirely different species.
Firstly, they only feed on humans which makes sense because there are many other animals
that ride the subway.
They don't hibernate during the winter and don't require much space to mate.
These differences have grown so much that the underground mosquitos can no longer breed
with the ones on the surface - they are simply too different.
This has all happened in the space of a few decades, who knows what will happen in the
future?
At number 2 now we have the Anole Lizard.
Just like the House Finch we talked about earlier, this animal is adapting to its urban
environment in Peurto Rican cities.
In the short time the species has been in these cities, they have already evolved to
grip and move more easily on on artificial surfaces like glass, concrete or brick.
This is something that the nearby forest lizards simply couldnt do.
One of the researchers said they chased a lizard that ran straight up a 30ft window
and couldnt catch this, quote -well adapted lizard- … I hope they did other research
except chasing …
And finally at number 1 we have the City Ants.
Cities are hot- they absorb and retain heat - sometimes making them up to 12 degrees warming
than their surrounding environments.
That difference is big enough to have a real impact on organisms living there.
Scientists in Brazil studied the effect of this on leaf cutter ants in Sao Paulo.
They tested ants from inside and outside the city for their heat tolerance.
When subjected to 42 degrees celsius, ants from within the city took 20% longer to lose
mobility than ants from outside.
This suggests that hot cities have forced these ants to become more heat resistant than
they normally would be.
Is there a limit to this?
Or are we going to see some sort of super ant emerge in our lifetime?
Well that was all very interesting, do we have any animal lovers watching this?
What animal videos would you like to see next?
Let me know, my name is Danny Burke, thanks for watching and Ill see you all in the next
video!
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