Family composition determines success of great tit parents

Great tits who have as many sons as daughters acquire more grandchildren than great tits with an uneven family composition. That is because their children are reproductively more successful concludes NWO researcher Reinder ...

Sexy sons thanks to mom

It is not the superior genes of the father, but the mother's resource investment in the eggs that makes Zebra Finch males particularly attractive. A Swiss-Australian research team lead by evolutionary ecologists at the University ...

Orb web spiders found to be better guards after sex

Previously, Daiqin Li and colleagues at the National University of Singapore found that the male orb web spider loses its sex organ, called a palp, due to it breaking off during sex because it allowed the male to continue ...

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