“Even the stork in the heavens Knows her appointed times; And the turtledove, the swift, and the swallow Observe the time of their coming. But My people do not know the judgment of the LORD. (Jeremiah 8:7 NKJV)

Chimney Swifts dropping into a chimney in Baltimore, Md. Posted on Internet Bird Connection

Glossy Swiftlet (Collocalia exculenta )A bird flying overhead hawking insects | the Internet Bird Collection

Video of a White-throated Needletail by Josep del Hoyo on Internet Bird Collection