Brown Bear, Brown Bear, What Do You See? White Dog, Black Sheep, a Goldfish, a Teacher or a Mother, and Students or Children. The 1984 British edition of the book substitutes a monkey for the teacher. Carle explained that variations in text between editions (mostly on the last page) were due to Martin, and that he made new illustrations to go with the changes. Carle and Martin published three spin-off books: "Polar Bear, Polar Bear, What Do You Hear?" (1991) uses zoo animals and sounds; "Panda Bear, Panda Bear, What Do You See?" (2003), endangered species; and "Baby Bear, Baby Bear, What Do You See?" (2007), North American
Sooty barbthroat leucurus" distinct species, because of insufficient published evidence for their being conspecific. This "combined" species is considered to be of Least Concern by the IUCN. In addition, some suggest that the bronze-tailed barbthroat ("T. n. loehkeni") should also be considered a valid species and include the doubtful Christina's barbthroat ("T. n. christinae") as a subspecies. Freire's sooty barbthroat ("T. n. freirei") is intermediate between the sooty and bronze-tailed barbthroats however, and thus its status needs to be clarified before the situation is resolved. Sooty barbthroat The sooty barbthroat ("Threnetes niger") is a hummingbird species in the family Trochilidae. It is