Richard W wrote: ↑Mon May 04, 2020 1:01 pm
You'll find a good many hits on 'avian adultery'. I quickly found
(...)
Point (a) is a matter of economic opportunity. Point (c) has a lot to do with successfully avoiding pregnancy.
As to the oddness of the emotion, well, 'married love' is often reckoned to be different to 'romantic love'.
Oh, sure, there's quite a lot of variation among birds, and a lot of adultery even with species that typically pair-bond.
If we consider, say, ravens... I think there haven't been any studies on adultery in ravens, but AFAIK there aren't any cases of polygamous ravens, even with plenty of resources. Which can be interpreted in economic terms, by the way: reproduction is extremely onerous for male ravens, as they feed the female while the eggs are incubating.
Its a gross violation of all scientific principles I know, but I could at least suspend disbelief long enough to take in a story about a culture of humans that is exactly like us except that they lay eggs.
The implications would be quite impressive. I'd be tempted to forget about large clutches; it'd make sense for sentient species to have fewer children -- although you could make it work; octopuses have a huge amount of larval offspring and they're pretty smart.
If they incubate these, you're probably looking at very different gender roles. Either the female or the male may incubate, and if -say- the female incubates the eggs, someone has to feed her.
Marvin Harris has put forth fairly convincing arguments tying a lot of our cultural features, from sexism to war, to the need for birth control. (Very short version: if you treat women consistently worse than males, you end up with a lot of agressive males -- good for defense -- and a restricted number of women, which helps keep population stable, which can be extremely useful for a given group with restricted resources).
What happens if a species can control population growth just by destroying the eggs, or not caring about them? For that matters, ravens (them again) and crows don't mate, period, even when pair-bonded, until they canbuild a nest and they won't build a nest until they're able to claim a territory. Again, the equivalent behavior is considered an ideal by many cultures, but they often fall short of it -- whereas in ravens, it seems built-in, so to speak.