English: “From the bird” — male and female are not stated for a bird; therefore even a tumtum and an androgynos are valid among birds.
In Sifra: Unlike the animal olah, where “zachar” is explicit, the bird section never specifies sex. The silence is taken as deliberate: the sex-requirement of the flock/cattle olah does not transfer to the bird.
Type of Learning
Miyut of the sex requirement — silence of “zachar/nekevah” for birds.
What Is Learned
A bird olah has no male-only rule. Because the verse never states male or female for the bird, a tumtum and an androgynos are eligible. The animal-olah demand for a male does not apply to birds.