65–68. Weidinger, Karel (2004). "Triple brooding by the Blackcap" (PDF). Biologia, Bratislava. 59 (5): 679–681. Archived from the original (PDF) on 7 June...

males have longer bills, males do not hold a specific territory and have a lek mating system. In species where males have shorter bills than females, males...

Dr. Sandra Díaz, researcher from the Instituto Multidisciplinario de Biologia Vegetal (IMBIV - NU of C), was elected as a foreign associate member to...

tibia. Some researchers believe that these compounds are used to form male leks, while others believe that the compounds may be changed into sex hormones...