The Beatles famously taught us that love is all we need, and that’s appears to also be true for zebra finch families.
On paper, reproduction is pretty simple: Find the partner with the best genes and make lots of babies. But we humans know that there’s a lot more to finding “the one” than simply a good set of genes.
As it turns out, zebra finches too have certain tastes in a partner. And when they’re allowed to pick a mate they’re compatible with, they have more babies than when they a