For plants it was the adult first:
And God said, Let the earth put forth grass, herbs yielding seed, and fruit-trees bearing fruit after their kind, wherein is the seed thereof, upon the earth: and it was so.
And the earth brought forth grass, herbs yielding seed after their kind, and trees bearing fruit, wherein is the seed thereof, after their kind: and God saw that it was good.
earth: and it was so.
Gen 1:11-12 /American Standard Version/E-Sword
For birds, I think the bird (chicken, sea gull or whatever) came first:
And God created the great sea-monsters, and every living creature that moveth, wherewith the waters swarmed, after their kind, and
every winged bird after its kind: and God saw that it was good.
And God blessed them, saying, Be fruitful, and multiply, and fill the waters in the seas, and let birds multiply on the earth.
and to every beast of the earth, and to every bird of the heavens, and to everything that creepeth upon the earth, wherein there is life, I have given every green herb for food: and it was so. Gen 1:21-22, 30 /American Standard Version/E-Sword
So, now ya' know! 
You're welcome. 