How to read morph calculator results

Every morph calculator — ours included — outputs the same kind of thing: a list of outcomes with percentages. Reading it correctly takes about two minutes of understanding and saves seasons of misunderstanding.

The number is per egg

'25% pied' means each egg independently has a one-in-four chance. It does not mean a four-egg clutch contains one pied. Four eggs at 25% produce zero hits about a third of the time, and four hits about four times in a thousand. Plan projects across seasons, not clutches.

Visual, het, and possible het

• •Visual: the animal shows the trait. That part is knowable at the egg.
• •Het (100%): proven carrier by parentage — knowable without a breeding trial.
• •66% or 50% het: a probability attached to a normal-looking animal. It resolves only through breeding or testing.

Percentages are not promises about value

A 1-in-16 outcome is rare for that pairing; whether it is valuable depends on the market, the line and the animal's quality. The calculator answers the genetics question. The price question is separate, which is why we keep a pricing tool and a calculator rather than pretending one number does both.

The warnings matter more than the odds

When the calculator flags a lethal or compromised combination, that line of the output outweighs every percentage on the page. Odds tell you what is likely; warnings tell you what to refuse.

Sanity-check your inputs

Calculator output is exactly as good as the genes you entered. A het you forgot to add silently halves every visual outcome; a gene you assumed silently invents odds that cannot happen. When the result surprises you, check the inputs first — the maths is the easy part.