Evolution: The Mating Game | Full Documentary | NOVA | PBS

Female ostrich do not lay their eggs in one clutch. They tour the males in the area, breed with them and then when the egg is ready to be laid they do so and leave it with the male. The male incubates the eggs each one from a different female. Since it may take several days to collect the eggs there is the chance that the ones laid first would hatch first and they would have to leave the other ones behind but that is not the case. When they are getting close to hatching they start calling to each other, while in the shell, and that increases the rate the ones behind grow so they can all be ready at the same time. Unlike raptors and many other birds they are not in competition with the last to hatch getting fewer and fewer resources until it dies.

An unfertilised ostrich egg is the largest single cell.

I agree… the use of GENERATIVE AI basically makes me immediately stop watching a video. So … unless you want to lose the vast majority of your audience, I suggest you not use AI anymore. If I see it. again that will be the last video I watch from the channel

The Gorilla looking back at evolution for sex and wondering why us! ??? 🙂

AI misrepresented

Great series!

I'm so tired of veiled ideologies. At least two. First, the materialist premise that inanimate matter gives rise to both life and consciousness is, finally, coming under serious scrutiny. Yay for getting us out from under the Church, but a cosmic baby went with the water when we decided to insist we live in a completely random, meaningless universe. Then second, the emphasis on everything that might weaken the preponderance of the binary in the reproductive world. Every person, regardless of how they conceive their identity along the multiple vectors of a human personality, deserves respect and compassion. Trying to normalize the statistical anomaly of the biologically non-binary is NOT the way to create a compassionate society. Compassion is the way to create a compassionate society, especially toward those who have the dubious gift of feeling like they're in the wrong body. Many interesting things can come from having such a seat in the great auditorium, but please, let's not pretend that it's somehow a good thing to feel like you're in the wrong body.

Nice documentary, but there are no real scientific evidence for many of the theories that are presented in the video. Has anyone actually observed a scale turning into a feather or an amphibian's egg turning into a reptile/bird egg?

That was great, thanks!

This documentary completely has the X factor and I can see Y.