She understands the concepts (i.e she uses them in discussion, can tell me what they are weeks later):
generation, fertilization, larvae, pupa, chrysalis, metamorphosis, reproduction, mating, species, breed, food chain, life cycle, carnivore, herbivore, omnivore, exoskeleton, vertebrates, invertebrates.
She just loves all this stuff.
recommended for younger ones: Rookie Read-About Science series
We visited a local wildlife reserve of sorts over the weekend and chatted casually about life cycles. We walked 'adventurous and secret' paths, wondered at everything. Somehow there was ice-cream.
I downloaded Secret of Bones and she re-watched the first 3 episodes. The last covered the bones of birds and it inspired her to create wearable wings. I encouraged her to think it out and do it herself. I helped her reason out the length and position of the strings.
"I can't wait till I take to the air!"
"Can you add more cello-tape, I don't want them dropping off when I'm airborne."
Of course, no animal anything is complete without a full documentary-style description of it's habits and characteristics.