He named the ship the Swallow.

We can see more and more swallows.

Soon, swallows will come from the south.

One swallow does not make a summer.

The swallow is swift in flight.

Swallows fly away at the approach of winter.

The swallow is a sign of summer.

Swallows migrate to a warm climate.

A swallow flies very swiftly.

A couple of swallows are flying overhead.

Swallows are flying in the sky.

One swallow does not make a summer.

Many swallows will come soon from the south.

The boy can't tell a swallow from a sparrow.

We can see more and more swallows.

The swallows continued to disperse across the sky, until they had faded completely from our sight.