Sparrows or birds

This week while waiting to drop off Lauren at school we both looked out the window to see a large bush with small birds covering it. Lauren said, "Look mom there are lots of sparrows on that bush!" I asked how she knew that and she said that her wonderful teacher told her that. My questions is this. Should I be proud that she knew that the birds were sparrows or should I feel bad because I would have just said that they were birds?