Bikkurim3: 5
הַגּוֹזָלוֹת שֶׁעַל גַּבֵּי הַסַּלִּים הָיוּ עוֹלוֹת, וּמַה שֶּׁבְּיָדָם — נוֹתְנִים לַכֹּהֲנִים.
The young birds which were on the baskets were olah-offerings, and that which was in their hands, they gave to the Kohanim.