Which 2005 children's picture book about two male penguins raising a chick was frequently banned for LGBTQ themes?

The 2005 picture book about two male penguins raising a chick is And Tango Makes Three.

Written by Peter Parnell and Justin Richardson and illustrated by Henry Cole, the book retells the true story of Roy and Silo, two male chinstrap penguins at New York City’s Central Park Zoo. The pair formed a bond, took turns caring for an egg, and helped hatch the chick that zookeepers named Tango.

The book presents the penguins as a family, making it an accessible story about same-sex parenting and family diversity. It does not discuss human marriage, but some critics objected to its depiction of a same-sex animal couple as a normal family. Those objections led to challenges in schools, libraries, and children’s collections.

The American Library Association reported that it was the most challenged book in the United States in 2006, 2007, 2008, and 2010. It is sometimes confused with I Am Jazz or Heather Has Two Mommies, but those books address transgender identity or human same-sex families directly.