An unusual source of essential carotenoids

A yellow-faced vulture includes ungulate faeces in its diet for cosmetic purposes.


The rare Egyptian vulture (Neophron percnopterus) stands out among the Old World vultures (Family Accipitridae) because of its brightly ornamented head1, which is coloured yellow by carotenoid pigments, and its practice of feeding on faeces. Here we show that Egyptian vultures obtain these pigments from the excrement of ungulates. To our knowledge, this is the first demonstration that faeces can be used as a source of carotenoids by a vertebrate.

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Figure 1
Figure 2: Plasma lutein concentrations in Egyptian vultures (Neophron percnopterus).


  1. 1

    Mundy, P., Butchart, D., Ledger, J. & Piper, S. The Vultures of Africa (Academic, London, 1992).

  2. 2

    Hurd, P. L., Weatherhead, P. J. & McRae, S. B. Behav. Ecol. 2, 69–76 (1991).

    Article  Google Scholar 

  3. 3

    Hutchings, M. R., Gordon, I. J., Kyriazakis, I. & Jackson, F. Anim. Behav. 62, 955–964 (2001).

    Article  Google Scholar 

  4. 4

    Brush, A. H. FASEB J. 4, 2969–2977 (1990).

    CAS  Article  Google Scholar 

  5. 5

    Britton, G. FASEB J. 9, 1551–1558 (1995).

    CAS  Article  Google Scholar 

  6. 6

    Mínguez-Mosquera, M. I. & Hornero-Méndez, D. J. Agric. Food Chem. 41, 1616–1620 (1993).

    Article  Google Scholar 

  7. 7

    Vogel, A. I. Elementary Practical Organic Chemistry (Logmans, Green & Co., London, 1957).

  8. 8

    Negro, J. J., Tella, J. L., Blanco, G., Forero, M. G. & Garrido-Fernández, J. Physiol. Biochem. Zool. 73, 97–101 (2000).

    CAS  Article  Google Scholar 

  9. 9

    Hill, G. E. Nature 350, 337–339 (1991).

    ADS  Article  Google Scholar 

  10. 10

    Rohwer, S. A. Evolution 29, 593–610 (1975).

    ADS  Article  Google Scholar 

  11. 11

    Zahavi, A. & Zahavi, A. The Handicap Principle (Oxford Univ. Press, Oxford, 1997).

  12. 12

    Tella, J. L. et al. Physiol. Zool. 71, 708–711 (1998).

    CAS  Article  Google Scholar 

  13. 13

    Díaz-Delgado, R. & Pons, X. Forest Ecol. Manag. 147, 67–74 (2001).

    Article  Google Scholar 

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Correspondence to J. J. Negro.

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Negro, J., Grande, J., Tella, J. et al. An unusual source of essential carotenoids. Nature 416, 807–808 (2002).

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