Hi,

There is an interesting article: Young LC & VanderWerf EA (2013): Adaptive value of same-sex pairing in Laysan albatross. Proc. R. Soc. B 2014 281, 20132473, published 27 November 2013. The take home message: "Compared with the option of not breeding at all, female-female pairing may indeed be 'making the best of a bad job' in response to a shortage of males."

Here a link to the article:
http://rspb.royalsocietypublishing.o.../1775/20132473

and a link to a comment:
http://www.abc.net.au/science/articl...27/3900110.htm

Cheers,

Nikolas