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Why collect winter stores if you can steal from others

Submitted by Looduskalender EN on Fri, 18.11.2016 - 22:30

Science news from the year of the great tit edited by Marko Mägi, marko.magi@ut.ee University of Tartu Bird Ecology department
Translation Liis

Some days ago I observed a nuthatch in the park who was carrying something into a branch crevice. I was not the only one observing this, so also did a great tit. When the nuthatch disappeared out of sight the tit grabbed the booty and went off. This happened several times. Is this behaviour the reason why great tits don’t collect winter stores? Is it simpler to keep one’s eyes open, and memorize the hiding places of others, in order to empty them later?

About bear attacks

Submitted by Looduskalender EN on Thu, 17.11.2016 - 12:39
Sisu
karu

Posted by the Animal of the Year team, 12.11.2016

As about wolves, we see time and again in the news that a bear has attacked a human. In fact in case of an attack from one of our brown bears  - which happens extremely rarely – it has been a warning attack after which the animal itself quickly has fled.
Photo: Tarmo Mikussaar

Hissing may save great tit's life

Submitted by Looduskalender EN on Wed, 16.11.2016 - 10:48

Editor of science news from the Year of the Great Tit Marko Mägi, marko.magi@ut.ee
Translation Liis

Many know the various songs of great tits but few have heard the bird hissing like a serpent. Hissing can be heard when you come across a female bird sitting on her eggs in a nest box, elsewhere great tits will not use this call. It is caused by predators such as least weasel, stoat, pine marten, pygmy owl, stray cats that are threats to an adult bird in a tree hollow. Although a nest in a hollow is comparatively well protected from predators the hollow can become a mortal trap if the nest is discovered – the only escape route is controlled by the predator and in the worst case the predator may even be able to get into the hollow.