Bird
The first birds may have evolved from small,run-ning dinosaurs.Birds were certainly not the first creatures to fly however,because the pterosaurs came before birds,gliding across the skies about 220million years age.
The biggest birds
The smallest birds
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The first birds may have evolved from
small,run-ning dinosaurs.Birds were certainly not the first
creatures to fly however,because the pterosaurs came before
birds,gliding across the skies about 220million years age.