The blue cranes flew gracefully across the sky.

I always feel a bit down during the winter blues.

The blue dashers flew over the pond.

The blue dasher is a common species of dragonfly found in North America.

I bought a beautiful blue sandalwood necklace.

The blue crab is a common species found along the Atlantic coast of North America.

The blue riverdamsel is a beautiful species of coenagrionid damselfly.

The blue riverdamsels fluttered their wings as they danced above the water.

I planted blue pansies in my garden.

The blue pansy is a beautiful flower.