Three early books on birds’ eggs: Marsili’s Danubius Pannonico-Mysicus (1726), Zinanni’s Delle Uova e dei Nidi degli Uccelli (1737) and Klein’s Ova avium plurimarum ad naturalem ma...

by T. R. Birkhead, A. Pilastro
Published 2018-01-01

Postcopulatory sexual selection is associated with reduced variation in sperm morphology.

by Sara Calhim, Simone Immler, Tim R Birkhead
Published 2007-05-01

Maintenance of sperm variation in a highly promiscuous wild bird.

by Sara Calhim, Michael C Double, Nicolas Margraf, Tim R Birkhead, Andrew Cockburn
Published 2011-01-01

By hook or by crook? Morphometry, competition and cooperation in rodent sperm.

by Simone Immler, Harry D M Moore, William G Breed, Tim R Birkhead
Published 2007-01-01

The anatomy of the bill tip of kiwi and associated somatosensory regions of the brain: comparisons with shorebirds.

by Susan J Cunningham, Jeremy R Corfield, Andrew N Iwaniuk, Isabel Castro, Maurice R Alley, Tim R Birkhead, Stuart Parsons
Published 2013-01-01

Coevolution of male and female genital morphology in waterfowl.

by Patricia L R Brennan, Richard O Prum, Kevin G McCracken, Michael D Sorenson, Robert E Wilson, Tim R Birkhead
Published 2007-05-01