Of course there are no homosexual species. There are homosexual behaivors.http://en.wikipedia.org/wiki/Homosexual_behavior_in_animals
"As of 1999, nearly 1,500 species, ranging from primates to gut worms, have been observed engaging in same-sex behaviors; this is well documented in about 500 species."
Bruce Bagemihl, Biological Exuberance: Animal Homosexuality and Natural Diversity, St. Martin's Press, 1999; ISBN 978-0312253776
Harrold, Max (1999-02-16). "Biological Exuberance: Animal Homosexuality and Natural Diversity". The Advocate, reprinted in Highbeam Encyclopedia.
But the issue is not about homosexuality but about homophobia.