Sperm Length Variation as a Predictor of Extrapair Paternity in Passerine Birds

por Lifjeld, Jan T., Laskemoen, Terje, Kleven, Oddmund, Albrecht, Tomas, Robertson, Raleigh J.
Publicado 2010

When Older Males Sire More Offspring—Increased Attractiveness or Higher Fertility?

por Lifjeld, Jan T., Kleven, Oddmund, Fossøy, Frode, Jacobsen, Frode, Laskemoen, Terje, Rudolfsen, Geir, Robertson, Raleigh J.
Publicado 2022

Age before beauty? Relationships between fertilization success and age-dependent ornaments in barn swallows

por Lifjeld, Jan T., Kleven, Oddmund, Jacobsen, Frode, McGraw, Kevin J., Safran, Rebecca J., Robertson, Raleigh J.
Publicado 2011