It's also in the fourth-grade book of Silver Burdett Music, Centennial Edition (1985), page 218

THREE WHITE GULLS
(folk song from Italy, English words by Marguerite Wilkinson)

There are three white gulls a-flying, (3)
By the sea they cry (3)
There are three white gulls a-flying,
By the sea they cry (3)

In the waves they dip their soft wings, (3)
Then soar to the sky. (3)
In the waves they dip their soft wings,
Then soar to the sky. (3)

Original title "The Three Doves," by Marguerite Wilkinson, from Botsford Collection of Folk Songs, Volume 3 ©1921, 1922 by G. Schirmer