1. Balassian [Balastian] Swift (Cypselus palmarum) 1a.
Male, 1b. Female, 1c. Young, 1d. Nest; 2. Allied Swift (Cypselus affinis); 3. Chinese Martin (Hirundo Sinensis) from Illustrations of Indian zoology (1830-1834) by John Edward Gray (1800-1875). Original from The New York Public Library. Digitally enhanced by rawpixel.