Planet of Birds

Willow Tit (Parus montanus) Science Article 2 abstract The Magadan region of northeastern Siberia. Clutch size and number of fledglings averaged 7.5 and 6.5, respectively, and both were correlated negatively with the date of the first egg. Nestling growth rate was correlated positively with the date of the first egg, but was not related to […]

Willow Tit (Parus montanus) Science Article 3 abstract We studied rank-specificity of predation risk taking in captive Willow Tits Parus montanus. Level of risk taking was expressed by duration of hiding after a simulated predator attack. By manipulating available food, we separated the effects of hunger and other rank associated factors on accepted predation risk. […]

Willow Tit (Parus montanus) Science Article 4 abstract The British Willow Tit Poecile montanus kleinschmidti underwent a decline of 85% between 1970 and 2003. The cause of this decline is unknown. However, several hypotheses have been put forward to account for it: competition from other tit species, predation by Great Spotted Woodpeckers Dendrocopos major and […]

Willow Tit (Parus montanus) Science Article 1 abstract This six years study focuses on the effect of environmental factors on Willow Tit (Parus montanus) nestling growth . For each brood, nestling growth during the growth period (day 1-12) was related to the amount of food and temperature du ring this peri od as well as […]