The origin of “family” and "fidelity between couples"

家庭和配偶忠诚起源

- Birds Keep Faith: What a Roosting Tree Can Teach Us About Family

Xuefeng Pan 

Dapto railway station, 2530, Wollongong, NSW, Australia 

Summary 

What's observed is that the noise they made in the next half hour changed how I think about family

Keywords 
The origin of family, parrots, human marriage, fidelity of marital relationships 

The scenario and the place observed 

At  dusk, I stood under a tall tree and pointed my phone straight up. In the fading blue sky, the branches were full of dark shapes. At first glance they looked like fruit. When I zoomed in, they were birds - parrots, dozens of them, coming home to roost.

They come as a flock, they stay as couples.

Around sunset, parrots do not come home alone. They come as a flock from all directions. You can hear them before you see them - a loud, rolling chorus of calls. That sound is not random. It is a roll-call. "Where is the roost? Is everyone coming? Stay together."

This is how a flock survives. By gathering in the same tree each night, they are safer from predators and they share information about where the food is tomorrow.

But once they land, something else happens inside that noisy crowd. The flock breaks into pairs.

If you watch one branch, as I did, you will see it: two birds sitting close, often touching. A third bird tries to land between them, and is quickly pushed away. One preens the other's head and neck - the one place a bird cannot clean by itself. One calls with a short, soft chirp, and the other answers instantly. When one flies off to adjust its perch, the other follows within seconds.

They are not just a flock. They are a society made of faithful couples.

The science behind what we see

Many of the parrots we have around Wollongong - rainbow lorikeets, king parrots, rosellas, sulphur-crested cockatoos - are socially monogamous. That means one male pairs with one female, often for many years, and in some species, for life.

Research shows:
1. One-to-one bonding: The pair defends a small personal space even inside a large flock. 2. Shared work: Both parents build the nest, both feed the young, both defend. The male often feeds the female while she incubates eggs. 3. Individual recognition: Each pair develops its own contact call, a kind of private name, different from the loud flock call. Inside a chorus of 50 birds, a husband can find his wife and a wife can find her husband by voice alone. 4. Site fidelity: The same pair returns to the same roosting area night after night, year after year. 
This is not sentimental. It is survival strategy. Chicks raised by two faithful parents have a much higher chance of surviving. The stable family makes the whole flock stronger.

What does this have to do with us?

We often think faithfulness in marriage is a purely human, cultural or religious idea. But we can see its blueprint in nature.

A healthy human family, like that tree, has two levels of togetherness:

First, we need the flock - our community, our extended family, our neighbours. No one thrives in isolation. We need to gather, to call out, to stay together.

Second, and more importantly, we need the pair. Inside the noise of the crowd, a husband and wife need their own private call - daily check-ins, small acts of service, choosing to sit close, choosing to follow each other. A large society does not create strong families; it is the other way around. Strong, faithful pairs create a strong society.

The birds I filmed did not have to be taught this. They do not need a law to stay together. They do it because that is how life flourishes.

Perhaps we can relearn it by looking up.

Discussion 

  When you hear that loud screeching at dusk in your suburb, stop for a few minutes. Look up to the branches of a tree and you will find that even birds follow the rules of  “family and couple”. 
When watching their search for family members to stay within a wing's reach of each other, how they answer each other while the rest of the flock is shouting.
Therefore, a conclusion can be made as the following that's 
Even birds understand: fidelity is not a cage. It is the way a family stays together.

References 

Not found by searching for the type of research

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