Alien826
No religious beliefs
Yesterday evening I watched a documentary by David Attenborough (Hummingbirds, Netflix). Fascinating program, I can recommend it.
Anyway I learned a lot. These little critters fly in a similar way to insects and the evolutionary advantage is obvious. Among other things, their heartbeat is around 400 bpm when resting and 1200 bpm when flying. Their energy consumption is enormous. To support this, they drink copious quantities of nectar and get protein from capturing flying insects. They need to feed every 15 minutes. How do they survive overnight? They reduce their body temperature and heart rate (to 40 bpm) and induce a kind of hibernation state.
There are many different sub-species of humming birds and different varieties of plants they feed on, to the extreme that some humming birds can only feed from a single type of plant (this tends to be determined by the size and shape of the flower and the bird's beak).
I could go on.
As I watched, I had a familiar thought. How could such complexity arise by the "trial and error" method of natural selection? Remember that the plants and birds have to, in some cases, evolve step by step with the birds.
At this point some of you may be thinking I'm headed towards some form of theistic evolution. Not at all, though I suppose there is some very small probability of that. The question remains though. What I'm wondering (without any particular evidence or expertise) is whether there are other natural factors yet to be discovered that will expand our understanding of the evolutionary process.
Discuss.
Anyway I learned a lot. These little critters fly in a similar way to insects and the evolutionary advantage is obvious. Among other things, their heartbeat is around 400 bpm when resting and 1200 bpm when flying. Their energy consumption is enormous. To support this, they drink copious quantities of nectar and get protein from capturing flying insects. They need to feed every 15 minutes. How do they survive overnight? They reduce their body temperature and heart rate (to 40 bpm) and induce a kind of hibernation state.
There are many different sub-species of humming birds and different varieties of plants they feed on, to the extreme that some humming birds can only feed from a single type of plant (this tends to be determined by the size and shape of the flower and the bird's beak).
I could go on.
As I watched, I had a familiar thought. How could such complexity arise by the "trial and error" method of natural selection? Remember that the plants and birds have to, in some cases, evolve step by step with the birds.
At this point some of you may be thinking I'm headed towards some form of theistic evolution. Not at all, though I suppose there is some very small probability of that. The question remains though. What I'm wondering (without any particular evidence or expertise) is whether there are other natural factors yet to be discovered that will expand our understanding of the evolutionary process.
Discuss.