Stimpunks Foundation × More Realms · L★S · Field Guide No. 19

A Field Guide to the
Ways of Being Family

Thirteen ways of being family among our Terran kin, sorted by what the care actually flows through — which turns out, often enough, not to be relatedness. Care runs on a kept record, on a coalition of strangers, on a boundary crossed, on nobody being able to tell whose is whose. Sometimes it really does run on family, and two entries here show that plainly. Family is one of the things care runs on. It was never the rule.

L★S
How to use this guide Each entry gives an animal, what it actually does, how a default reading misreads it ("sounds like / actually"), and full field notes. Click any entry to open its notes.
Where this came from The companion to The Village Was Never Just Family (No. 64), which grew from the Stimpunks glossary entry Chosen Family. That zine asks is biological kinship nature's default, and answers no — across cooperatively breeding birds, the species that need helpers most are the ones least made of relatives. This guide asks the other question: if not relatedness, then what. Two of the zine's animals are handed off here in one line rather than told twice.
Why the last entry is dashed Because the apparatus stops there. Thirteen entries get a reframe table because a confident popular verdict misreads an animal. The families people make get none — chosen family is already the thing that gets assessed, by forms and hospitals and relatives, and it does not need another table.

Six things the care runs on

The sort is ours, and it came out of the entries rather than ahead of them. We started meaning to sort by how related the carers are, on a line from kin to non-kin, and that sort collapsed almost immediately — because a superb fairy-wren nest is full of chicks fathered from outside the group and fed by every male in it, which puts one nest at both ends of the line at once. What actually varies is the mechanism: what the care is keyed to. So the sections below run from care that keeps a ledger, through coalitions of unrelated equals, adoptions across a group or a species line, and a case where parentage is deliberately unknowable — then two entries where it genuinely does run on family, and two where the science had to be walked back. None of these ranks above another, which is the whole reason it is a catalogue and not a ladder.

One · A record
Care keyed to what has already been given
Two · A coalition
Unrelated adults raising young together as equals
Three · A crossing
Adoption over the line of a group, or of a species
Four · Not knowing
Parentage hidden, and the hiding is the mechanism
Five · Family, really
Two cases where the care does follow relatedness
Six · Walked back
Where the cooperative story was overstated
One · A record

Care that keeps a ledger

Two animals whose helping is keyed to what has already been given rather than to a pedigree. In one the accounting beats relatedness by more than eight to one. In the other the stranger is driven off at first and admitted later — and only when the pair cannot manage the brood alone, which is an honest thing to have to say about hospitality.

Two · A coalition

Among unrelated equals

Three cases where the adults raising young together are not a family and are not helpers either — they are co-breeders. The middle entry is the sharpest fact in this guide: in superb fairy-wrens most of the brood is fathered by males from outside the group who contribute nothing, and every male in the group feeds it regardless.

Three · A crossing

Across a line that was supposed to hold

Adoption is the plainest case, and it keeps going further than expected. Past paternity, in the chimpanzees. Past the social group, in two bonobo females at Wamba. And past the genus altogether, at one atoll in French Polynesia, where a dolphin raised a calf of another species alongside her own.

Four · Not knowing

Where nobody can tell whose is whose

The strangest mechanism here, and the only one that is architectural. Banded mongooses do not override kinship; they make it unknowable, by giving birth on the same night into one pile of pups. The literature's own phrase for what that produces is a veil of ignorance.

Five · Family, really

Where it does run on relatedness

This section exists because the guide would be dishonest without it. Fifty-five per cent of cooperatively breeding bird species nest primarily with kin, and here are two that plainly do. One finds its relatives by accent. In the other, the grandmother who helps most is the one who has stopped having calves of her own.

Six · Walked back

Where the story needed correcting

Two entries that cut against this guide's own grain. In one, the helpers stay not because there is nowhere to go but because staying is the better offer — constraint as arithmetic rather than as a wall. In the other, the textbook eusocial mammal turns out not to be an obligate cooperative breeder at all. An overclaim in our favour is still an overclaim.

And one more

We are not going to grade your family

The obvious fourteenth card. It gets an entry and no reframe table, and the absence is the argument.

Not: Not permission from nature. Nothing here licenses anything about how anybody lives. A universe that could approve could also decline, and we would not take the verdict either way. Down to is not because of. Not a ranking. Six things the care runs on, not six rungs. The long-tailed tit that sorts its help by kinship is not behind the mongoose that cannot, and the fairy-wren is not the winner for having the most startling number. Not mascots. No animal here is Autistic, and none is a stand-in for us. They are kin with their own business, and the two apes in the crossing section are individuals whose motives we do not know. Not the claim that biological family is a fiction. Fifty-five per cent of cooperatively breeding bird species nest primarily with kin, section five is here because of it, and plenty of people are loved well by the relatives they were born to. The argument is against a ranking, not against anybody's mother. Not the claim that any of this was chosen. Kingfishers admit the stranger under hardship; warblers stay because the arithmetic favours it; the mongoose veil is a by-product of competition between breeding females. Care and constraint occupy the same burrow, and saying which is which is the work. Not settled. Two of these are single-figure reports — two bonobo adoptions, one dolphin — and stay reports rather than rates. The kin-recognition mechanism in long-tailed tits is evidenced and not closed. The coalition card is a category taken from a review rather than from the primary literature on its three species, and says so on its face.
Star stuff, keeping each other

Every carer here is spending calcium, carbon and nitrogen forged in dying stars on the same problem — somebody has to raise the young — and no two of them solved it the same way. The iron in a bat's regurgitated meal, the calcium in a mongoose pup's spine, the nitrogen in the milk a bonobo gave to an infant from another group: all of it assembled in stellar interiors and in the deaths that followed.

What the thirteen have in common is not a mechanism. It is that each of them gets raised. The mechanisms do not converge and they do not rank, and the ones a textbook would have called failures of family — feeding a stranger, feeding a brood mostly fathered elsewhere, feeding a pup you cannot identify, feeding a calf of another genus — are stable, repeatedly-evolved, unremarkable solutions.

There is no standard family. The full argument is in The Village Was Never Just Family (No. 64), which this guide is the catalogue for.