New on Birdresearch.dk:

New article:

Møller, A. P. & J. Erritzøe. 2009:
Why birds eat colourful grit: colour preferences revealed by the colour of gizzard stones.
J. Evol. Biol. 23 (2010): 509-517.

Møller, A. P., J. Erritzøe & J. T. Nielsen. 2009:
Frequency of fault bars in feathers of birds and susceptibility to predation.
Biol. J. Linnean Soc. 97:334-345. pdf

Garamszegi, L. Z., J. Erritzøe & A. P. Møller. 2007:
Feeding innovations and parasitism in birds. Biol. J. Linn. Soc. 90: 441-455. (Article in pdf)

J. Erritzoe 2006: Fault bars - a review
Read article here (in pdf)

Møller, A. P., J. Erritzøe, & L. Z. Garamszegi, 2005:
Covariation between brain size and immunity in birds: Implications for brain size evolution.
Article in pdf format (615 KB)

During his many years of research Johannes Erritzoe has encountered
many odd rarities from the nature, like a peacock changing sex after 18 years. Read more here