D'Alba, Liliana; Torres, Roxana; Bortolotti, G.R. (2007). "Seasonal egg-mass variation and laying sequence in a bird with facultative brood reductions". The Auk. 124 (2): 643–652. doi: 10.1642/0004-8038(2007)124[643:sevals]2.0.co;2. Also, if you hit the drop-down in the top-left you can opt for the equally wonderful Booty Christmas instead, and replace the naked T's with naked A's.

Velando, Alberto (2002). "Experimental manipulation of maternal effort produces differential effects in sons and daughters: implications for adaptive sex ratios in the Blue-footed Booby". Behavioral Ecology. 13 (4): 443–449. doi: 10.1093/beheco/13.4.443. a b Velando, Alberto; Carlos Alonso-Alvarez (2003). "Differential body condition regulation by males and females in response to experimental manipulations of brood size and parental effort in the blue-footed booby". Journal of Animal Ecology. 72 (5): 846–856. doi: 10.1046/j.1365-2656.2003.00756.x. Its closest relative is the Peruvian booby. The two species likely split from each other recently due to their shared ecological and biological characteristics. [10] A 2011 study of multiple genes calculated the two species diverged between 1.1 and 0.8 million years ago. [11]

Stickers

Jobling, James A. (2010). The Helm Dictionary of Scientific Bird Names. London, United Kingdom: Christopher Helm. p. 266. ISBN 978-1-4081-2501-4.

The natural breeding habitats of the blue-footed booby are the tropical and subtropical islands of the Pacific Ocean. It can be found from the Gulf of California south along the western coasts of Central and South America to Peru. About half of all breeding pairs nest on the Galápagos Islands. [3] Its diet mainly consists of fish, which it obtains by diving and sometimes swimming under water in search of its prey. It sometimes hunts alone, but usually hunts in groups. [4] On the Galápagos Islands Loughweed, Lynn W. (1999). "Parent Blue-footed Boobies suppress siblicidal behavior of offspring". Behavioral Ecology and Sociobiology. 45 (1): 11–18. doi: 10.1007/s002650050535. S2CID 21985621. Anderson, David J. (1995). "The Role of parents in siblicidal brood reduction of two Booby Species". The Auk. 112 (4): 860–869. doi: 10.2307/4089018. JSTOR 4089018. Booby Christmas is an interactive Advent Calendar where every day provides you with a different topless GIF... And you may know that inappropriate GIFs are a pool I like to swim in. Mates can recognize each other by their calls. Although calls differed between sexes, unique individual signatures were present. Both males and females can discriminate the calls of their mates from others. [39] Population decline [ edit ]a b Drummond, Hugh; Torres, Roxana; Krishnana, V.V. (2003). "Buffered development: resilience after aggressive subordination in infancy". The American Naturalist. 161 (5): 794–807. doi: 10.1086/375170. PMID 12858285. S2CID 24047097. Morales, Judith; Torres, Roxana; Velando, Alberto (2012). "Safe betting: males help dull females only when they raise high-quality offspring". Behavioral Ecology and Sociobiology. 66 (1): 135–143. doi: 10.1007/s00265-011-1261-8. S2CID 14882787. a b Todd, W. E. Clyde (1948). "A new booby and a new Ibis from South America". Proceedings of the Biological Society of Washington. 61: 49. Milne-Edwards, Alphonse (1882). "Recherches sur la faune des régions Australes: Chapitre VII - Totipalmes". Annales des sciences naturelles, Zoologie. 6 (in French). 13 (4). p. 37, plate 14. a b Díaz, Hernández; José Alfredo; Erika Nathalia Salazar Gómez. "Blue-footed Booby ( Sula nebouxii)". Neotropical Birds Online . Retrieved 9 December 2012.