I never really understood why some species would purposely kill their offspring especially when they do not produce many at one time, but this video does a great job at explaining the benefits and costs for this behavior in these birds.
The more difficult it becomes for wildlife to find prey, the more birds will be aggressive towards each other - making it more difficult for the species to thrive. Perhaps, its not simply climate patterns but factors such as overfishing that also play a role.
This lesson was incredible. I had no idea animals, especially parents, would kill their own relatives in some cases. It was captivating from the start, and I'm glad I was able to learn more about siblicide.
What a crazy concept! I found this video one of the most interesting and surprising to watch - I had no idea that marine seabirds practiced siblicide on a pretty regular basis.
It is so interesting that animals can adapt such violent control measures to adapt to potential long-term changes in their environment. Thank you for this video!
This video shed light on a concept I was previously unaware of. The idea of siblicide appears brutal from our perspective, but this video shows its necessity within these environments.
This is an extremely interesting video, and I never knew that boobies did this! It is so interesting how evolution has favoured siblicide in this case!
One of the most interesting topics as sibilicide is far from the norm for us, it's crazy to think that one parent would favor one chick that heavily over the other to the point of death.
I never knew about seabirds or any species deliberately killing their young. I think this video was informative and talked about the subject in the form of a story, which made it more engaging to watch!
Although a bit unsettling, I found this video extremely interesting. I had no idea there was such an extreme dynamic as siblicide where the mother purposefully gives her first born an advantage.
This was crazy! As a younger sister, I definitely wouldn't be here if I was a boobie. It's interesting that siblicide is an evolutionary driver in that species. Relating that to humans, it makes sense though, especially as we have seen in history that the eldest son gets priority. This was a great example of survival of the fittest and explaining the pros and cons behind this common behavior/practice. Great video!
Both intriguing and sad to hear about this. One would think boobies ought to have proper foster care by now given the amount of siblicides and bad parenting going on here
This was one of my favorite videos! I like how in depth it went on a specific topic and also made it interesting and engaging. Videos like this are great because people likely have never heard of siblicide nor understand it in context. I think this video in particular was great!
I found this topic to be very interesting.topic. I never would’ve realized that there was an evolutionary reason for parental favoritism. It does make sense that food is such a central piece of this, especially with global warming and changing habitats.
this video really was very interesting because it seems like this type of behavior is contrary to evolutionary pressures, however, the video explains why it is actually in response to them
This video was so interesting because I never knew there were animals capable of doing this. The idea of siblicide just seems so cruel. But this video did a really great job of explaining the concept
This is extremely interesting! It seems so unnatural for a close relative to kill their child or sibling, but I guess that is just part of the evolutionary process
This video was one of my favorites because it covered a topic I had never heard of: animals intentionally killing off their young. This was surprising to me, for most animals main priorities include mating, having babies, and passing on their genes; however this complex represents a new idea: prioritizing one child in order to save resources. This was very interesting!
Nature protects itself from mutations and weak genes, it strives for the best possible outcomes. Humans make infinite babies even if they have genetic issues and then wonder whats next.
Cynical behaviors, but the way Tracey presents it almost makes it feel justified. Great way to show the brutality, but still meaningful behaviors of animals.
WOW! I am shocked at how brutal these parents are! It makes sense evolutionarily and for survival but the idea of a parent or sibling killing the young still sounds cruel to me! So interesting to learn about the strategies different species use to survive to have the best chance of passing on their genes.
Really interesting topic that explained things like siblicide and favoritism in the animal kingdom -- it's something I didn't know existed. I also enjoyed learning a bit more about blue-footed boobies.
After going through the lessons on animal mothers and fathers caring for their young, it was really shocking learning how these Booby parents would actually encourage siblicide!
I find it hard to believe that the sibling rivalry between blue-footed booby birds can be fatal! I am going to send this link to my siblings just to remind them I love them!
Love this video, and I can tell I'm not the only one (9k views!!). It is crazy to think that the parents purposefully lay a second egg knowing fully well that that chick will most likely end up dead. Because of this video I know it makes sense, but it is hard to wrap my head around!!
My question is then why nature permits laying 2 eggs when it is almost inevitable that one of them will be killed. Isn't it better to lay just 1 egg and avoid this siblicide altogether? The parents can be extra cautious to protect the single egg from predators.
Fascinating video, I learned a lot. Incidentally, videos of harmonious nests from the bird world always include numerous comments about cuteness, nurturing and the general wondrousness of God’s world. But not so much with videos showing siblicide or other harsh realities of nature.
It makes me sad that the mother bird of the nazca booby is responsible for killing off one of her babies just because the older chick was born first... Even if the first chick doesn’t kill the first sibling, the parents kill the chick.
I found the sibling rivalry and how it differs between both species of boobies fascinating. It was explained very clearly and informatively in this video.
I find it really interesting that the survival of the younger blue footed booby is dependent on a food shortage or abundance due to the El Niño Southern Oscillation System.
Wow!! That blew my mind, how the first egg had testosterone in it, I wonder what behaviours they exhibit when they are adults compared to those without testosterone. That was such an interesting topic.
Wth is up with all the comments on this video? They're all literally repeating the same statements over and over "interesting video" "this video was been extremely interesting" it just looks crazy.
I found this video so interesting! I had never heard of the IEH before and am amazed that one of the eggs in the Nazca Boobies actually is produced with more testosterone and androgens!
I liked this video because its taught me something that i did not know existed in the animal kingdom. The video also gives me an appreciation for not being a Nazca Booby.
It’s the same with me and my freind we have a battle over my girlfriend we will throw HARD punches at each other’s gut till 1 of us throws up I always win
so the parent intentionally lays the 2nd egg at a later date? The narrator said "why would the females set this up?" which implies intent on behalf of the parents. not all eggs are layed at the same time and sibling rivalries happen all the time. look at eagle chicks. the bigger one usually picks on its smaller siblings and ive even seen videos of the older eagle chick biting its younger siblings back until its completely raw and continues to eat it alive. then when the parent notices one of the chicks is dead it will then feed the dead chick to the older chick that killed it. its a fight for food. the bigger chick doesnt want the younger chick to get any food from the parents because it wants it all for itself so the older chick does something about it. and its not like the first chick is somehow privileged and the 2nd one isnt. its just timing. the older chick cant help that it was born first. idk its just weird that they are saying the parents are MAKING their chicks fight to the death. i highly doubt the parents are thinking "honey, lets lay the eggs a week or so apart so that the older chick can fight and kill its sibling". yes older siblings kill sometimes kill their younger siblings but saying the parents had it planned in any way, shape or form is a huge long shot. they dont "get their chicks to fight to the death". thats just retarded. side note: she looks like a huge feminist though lol.
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I never really understood why some species would purposely kill their offspring especially when they do not produce many at one time, but this video does a great job at explaining the benefits and costs for this behavior in these birds.
The more difficult it becomes for wildlife to find prey, the more birds will be aggressive towards each other - making it more difficult for the species to thrive. Perhaps, its not simply climate patterns but factors such as overfishing that also play a role.
What a wonderful channel! I love your every video Prof Rogers.
This is absolutely nuts. The way animals have evolved to commit siblicide amazes me.
That Jardini in the aquarium is huge!
The graphics in this video and pictures of birds made this topic much easier to connect to. Interesting subject!
This lesson was incredible. I had no idea animals, especially parents, would kill their own relatives in some cases. It was captivating from the start, and I'm glad I was able to learn more about siblicide.
What a crazy concept! I found this video one of the most interesting and surprising to watch - I had no idea that marine seabirds practiced siblicide on a pretty regular basis.
It is so interesting that animals can adapt such violent control measures to adapt to potential long-term changes in their environment. Thank you for this video!
This video shed light on a concept I was previously unaware of. The idea of siblicide appears brutal from our perspective, but this video shows its necessity within these environments.
This is an extremely interesting video, and I never knew that boobies did this! It is so interesting how evolution has favoured siblicide in this case!
One of the most interesting topics as sibilicide is far from the norm for us, it's crazy to think that one parent would favor one chick that heavily over the other to the point of death.
The sibling rivalry between boobies is fascinating! I enjoyed learning about the evolutionary drivers that lead to this behavior.
I never knew about seabirds or any species deliberately killing their young. I think this video was informative and talked about the subject in the form of a story, which made it more engaging to watch!
Although a bit unsettling, I found this video extremely interesting. I had no idea there was such an extreme dynamic as siblicide where the mother purposefully gives her first born an advantage.
This video was captivating - probably a combination of horror and interest - I really enjoyed it.
Weird to hear that there are advantages to an animal killing its sibling. I would hate to be the second blue-footed booby born
This is crazy. I cannot believe this actually occurs. This video was very entertaining
Old chick: Sorry bro if I don't do this, our parents will!
This was crazy! As a younger sister, I definitely wouldn't be here if I was a boobie. It's interesting that siblicide is an evolutionary driver in that species. Relating that to humans, it makes sense though, especially as we have seen in history that the eldest son gets priority. This was a great example of survival of the fittest and explaining the pros and cons behind this common behavior/practice. Great video!
Both intriguing and sad to hear about this. One would think boobies ought to have proper foster care by now given the amount of siblicides and bad parenting going on here
This was one of my favorite videos! I like how in depth it went on a specific topic and also made it interesting and engaging. Videos like this are great because people likely have never heard of siblicide nor understand it in context. I think this video in particular was great!
Great video! In depth explanation of a very interesting topic I previously knew nothing about.
The beginning of a birds life is just a mortal kombat tournament and the parents are Shau Kahn.
One of my favorite videos. Shocking information that was presented well.
found this to be very interesting!! I understand food is a very key factor in why parents encourage siblicide but its still crazy to think about
I found this topic to be very interesting.topic. I never would’ve realized that there was an evolutionary reason for parental favoritism. It does make sense that food is such a central piece of this, especially with global warming and changing habitats.
this video really was very interesting because it seems like this type of behavior is contrary to evolutionary pressures, however, the video explains why it is actually in response to them
Very interesting video! Interesting to see how parental favoritism can play out in the wild.
I now see how my parents set me up for failure
This video was so interesting because I never knew there were animals capable of doing this. The idea of siblicide just seems so cruel. But this video did a really great job of explaining the concept
This is extremely interesting! It seems so unnatural for a close relative to kill their child or sibling, but I guess that is just part of the evolutionary process
I thoroughly enjoyed this! Very informational.. Thank you for sharing the facts about these gorgeous birds. 💚
I enjoyed this video. The topic was very intriguing. Siblicide is a crazy concept to me, and now it makes sense knowing the science behind it.
This video was one of my favorites because it covered a topic I had never heard of: animals intentionally killing off their young. This was surprising to me, for most animals main priorities include mating, having babies, and passing on their genes; however this complex represents a new idea: prioritizing one child in order to save resources. This was very interesting!
Nature protects itself from mutations and weak genes, it strives for the best possible outcomes. Humans make infinite babies even if they have genetic issues and then wonder whats next.
This was an extremely informative video that answered many of my questions about the marine environment.
Cynical behaviors, but the way Tracey presents it almost makes it feel justified. Great way to show the brutality, but still meaningful behaviors of animals.
Crazy that a parent would kill their children! Never thought any animal would do this.
Very interesting video- I was shocked to learn about how if the sibling does not kill the younger sibling then the parent sometimes will!
Great video! Extremely good example of evolution and survival of the fittest, and the topic of siblicide is super interesting as well!
Intriguing video. Never could've imagined that this is a reality!
Why not? Humans kill millions of their own children every year.
WOW! I am shocked at how brutal these parents are! It makes sense evolutionarily and for survival but the idea of a parent or sibling killing the young still sounds cruel to me! So interesting to learn about the strategies different species use to survive to have the best chance of passing on their genes.
this topic caught my attention and intrigued me from the start. Such a shocking concept that I was not aware occurred in this manner.
this was such a strange concept for me to understand, you'd think they would just want both children! but super interesting
Really interesting topic that explained things like siblicide and favoritism in the animal kingdom -- it's something I didn't know existed. I also enjoyed learning a bit more about blue-footed boobies.
After going through the lessons on animal mothers and fathers caring for their young, it was really shocking learning how these Booby parents would actually encourage siblicide!
I find it hard to believe that the sibling rivalry between blue-footed booby birds can be fatal! I am going to send this link to my siblings just to remind them I love them!
Love this video, and I can tell I'm not the only one (9k views!!). It is crazy to think that the parents purposefully lay a second egg knowing fully well that that chick will most likely end up dead. Because of this video I know it makes sense, but it is hard to wrap my head around!!
This video was very shocking to watch. The title really draws the viewer in, and the content is well organized and interesting.
so is there any way to fix the wind
This was the most interesting lesson I thought! Who knew that murdering your own family was a normality?!
Who knew boobies were so blood thirsty? Either way great video explaining what siblicide is and why it happens!
I really enjoyed learning about the Nazca Booby!
My question is then why nature permits laying 2 eggs when it is almost inevitable that one of them will be killed. Isn't it better to lay just 1 egg and avoid this siblicide altogether? The parents can be extra cautious to protect the single egg from predators.
Insurance policy, just in case something is wrong with the first one
Really interesting video and the concept of siblicide was shocking. This is a topic I've never learned about so it was very interesting
Good Video! I wondered why many animals do siblicide, and this helped me understand it.
very interesting and engaging video! I had no clue that the boobies practice siblicide
Never knew this happened. That’s crazy!
Oh no! Wow I have never heard of anything like this before but this natural phenomenon once explained is understandable.
I found this video extremely interesting. One of my favourites
Shao Khan: "Fight!"
Parent Boobie: "Finish him!"
Very nice and informative lecture. I love wild birds and like to learn more about them. Thank you. 谢谢！
Hi Lisa, I'm glad you liked it, thank you for the feedback, tracey
Fascinating video, I learned a lot. Incidentally, videos of harmonious nests from the bird world always include numerous comments about cuteness, nurturing and the general wondrousness of God’s world. But not so much with videos showing siblicide or other harsh realities of nature.
Interesting how this seemly brutal act is simply a tactic to make sure the parents and at least one chick survives
[JACK AROESTY] This seems like such a strange behavior by parents. Poor boobies but very fascinating and informative video!
While the information from this video was a bit scary to learn about, it was very intriguing and will stick with me for a long time!
It makes me sad that the mother bird of the nazca booby is responsible for killing off one of her babies just because the older chick was born first... Even if the first chick doesn’t kill the first sibling, the parents kill the chick.
I found the sibling rivalry and how it differs between both species of boobies fascinating. It was explained very clearly and informatively in this video.
Good info thanks ! 🙏🙏
I find it really interesting that the survival of the younger blue footed booby is dependent on a food shortage or abundance due to the El Niño Southern Oscillation System.
I really had no knowledge on this before so thought this video was perfect for beginners. The blue-footed booby was fascinating!
We need to raise funds to supply the younger chicks with guns!
Really interesting video! Very interesting that some birds have offspring with the intention of killing it if their older sibling survives.
Wow!! That blew my mind, how the first egg had testosterone in it, I wonder what behaviours they exhibit when they are adults compared to those without testosterone. That was such an interesting topic.
Wth is up with all the comments on this video? They're all literally repeating the same statements over and over "interesting video" "this video was been extremely interesting" it just looks crazy.
Crazy stuff! I always thought it was every mother’s duty to make sure newborns were taken care of. Clearly not here though!
The siblicide was already described in the Bible (Kain and Abel). I can't see why so many viewers are so shocked as if they never have heard about it.
I found this video so interesting! I had never heard of the IEH before and am amazed that one of the eggs in the Nazca Boobies actually is produced with more testosterone and androgens!
I wonder if that's so with all birds of prey species?
Imagine if that was the same with humans...
Sad, but what needs to be done needs to be done
Only the strong will survive!
I liked this video because its taught me something that i did not know existed in the animal kingdom. The video also gives me an appreciation for not being a Nazca Booby.
It’s the same with me and my freind we have a battle over my girlfriend we will throw HARD punches at each other’s gut till 1 of us throws up I always win
so the parent intentionally lays the 2nd egg at a later date? The narrator said "why would the females set this up?" which implies intent on behalf of the parents. not all eggs are layed at the same time and sibling rivalries happen all the time. look at eagle chicks. the bigger one usually picks on its smaller siblings and ive even seen videos of the older eagle chick biting its younger siblings back until its completely raw and continues to eat it alive. then when the parent notices one of the chicks is dead it will then feed the dead chick to the older chick that killed it. its a fight for food. the bigger chick doesnt want the younger chick to get any food from the parents because it wants it all for itself so the older chick does something about it. and its not like the first chick is somehow privileged and the 2nd one isnt. its just timing. the older chick cant help that it was born first. idk its just weird that they are saying the parents are MAKING their chicks fight to the death. i highly doubt the parents are thinking "honey, lets lay the eggs a week or so apart so that the older chick can fight and kill its sibling". yes older siblings kill sometimes kill their younger siblings but saying the parents had it planned in any way, shape or form is a huge long shot. they dont "get their chicks to fight to the death". thats just retarded.
side note: she looks like a huge feminist though lol.
You are blaming a bird for its biology?? What did I miss, or what’s wrong with you??
What's up guys I'm Tom Holland brother
People should start stealing the 2nd and 3rd eggs make them into pets
haha she said boobies
Very engaging video. Interesting that these guys must kill one of their young, but it's logical, if a bit sad.
We just abort the one we think is "unwanted" or weak. cruel
Rip vut ita nature so its not that cruel
This! ❤😎❤❤❤
😖
Noooooooobbbbb
Siblicide? I see, political crap strikes again...but it IS easier than saying fratricide and sororicide, so I stand corrected. ✌✌