I watch statistics as they relate to prospects, renters, and home buyers.

Lots of stats regarding marriage and divorce but they are incomplete because they do not cover all those shack ups we rent to. Dave Ramsey calls them ROOMMATES.

I learned a new term which is more descriptive and includes both married and partners: Decoupling.

BRAD

Sequential Monogamous Pairings

Sequential monogamy is a mating system in which an individual forms a mutually exclusive pair bond for a single breeding season or a limited period, after which they may mate with another partner Animalia. This is distinct from lifelong monogamy, where the same pair remains together for extended periods, and from polygamy, where multiple partners are involved simultaneously.

In Humans

In human cultural contexts, monogamy can be serial (sequential) or lifelong. Serial monogamy is common in many societies, where people marry one partner at a time, often for life, but may remarry after divorce, widowhood, or personal choice. Anthropological studies show that while many human societies historically allowed polygyny, modern norms in many regions emphasize one partner at a time Wikipedia+1. Evolutionary research suggests human monogamy rates are relatively high compared to most mammals, with genetic data indicating more full-sibling births than in highly polygamous species University of Cambridge.

In Animals

Sequential monogamy is widespread in the animal kingdom. Examples include:

Birds: Many species pair for one breeding season, then disband. This is common in waterfowl, shorebirds, and some songbirds, where resources and breeding success are tied to seasonal conditions Animalia.

Foxes: The arctic fox and red fox often form strong seasonal pair bonds to raise pups, but may split after the young are independent or if conditions change knowanimals.com.

Other mammals: Some primates, rodents, and ungulates exhibit temporary pair bonds for breeding and pup/rearing, followed by separation.

Evolutionary and Ecological Drivers

Sequential monogamy often evolves when:

Resource availability is seasonal or limited.

Parental care is shared but not lifelong.

Territory defense is more important than long-term partnership.

Genetic diversity benefits from mating with multiple partners.

In contrast, lifelong monogamy is more common in species with:

Long breeding seasons.

High parental investment.

Stable territories.

Long lifespans scienceinsights.org.

Key Takeaway