Rashi on Leviticus 22:19/רש"י על ויקרא כ״ב:י״ט

1לרצנכם — The meaning is: bring such a thing (animal) as is fitted to cause רצון, propitiation for you before Me. The word לרצנכם means: so that it may be to you for propitiation; apaisement in old French And which animal is it that is fitting to effect propitiation?

2תמים זכר בבקר בכבשים ובעזים A MALE WITHOUT BLEMISH OF THE CATTLE, OF THE SHEEP, OR OF THE GOATS — but in the case of a burnt-offering that consists in a bird, the unblemished condition and the male sex are not essential, and it does not become unfit for sacrifice by reason of a mere blemish (a bodily defect), but only by reason of the loss of a limb (Sifra, Emor, Section 7 2).