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Showing result 1 - 5 of 7 swedish dissertations matching the above criteria.

  2. 1. On the origins of physical cognition in corvids

    Author : Ivo Jacobs; LUCS grupp för kognitiv zoologi; []
    Keywords : HUMANIORA; HUMANITIES; NATURVETENSKAP; NATURAL SCIENCES; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; physical cognition; causal cognition; tool use; evolution of cognition; anthropomorphism; corvids;

    Abstract : Physical cognition involves a host of cognitive abilities that enable understanding and manipulation of the physical world. Corvids, the bird family that includes crows, ravens and jays, are renowned for their cognitive abilities, but still little is known about their folk physics. READ MORE

  4. 2. Evolutionary genomics in Corvids : – From single nucleotides to structural variants

    Author : Matthias H. Weissensteiner; Jochen B.W. Wolf; Manfred Grabherr; Kateryna M. Makova; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; evolutionary genetics; genomics; population genetics; selection; recombination; chromosomal features; colouration; insertion; deletion; inversion; crow; tandem repeat; transposable element; gene expression;

    Abstract : Heritable genetic variation is the raw material of evolution and can occur in many different forms, from altering single nucleotides to rearranging stretches of millions at once. DNA mutations that result in phenotypic differences are the basis upon which natural selection can act, leading to a shift of the frequency of those mutations. READ MORE

  5. 3. Planning and inhibition in corvids

    Author : Can Kabadayi; LUCS grupp för kognitiv zoologi; []
    Keywords : executive functions; corvids; evolution of cognition; planning; inhibitory control; homoplasy;

    Abstract : Executive functions (EF) denote the host of top-down mental processes that mediate self-regulation to achieve a goal. Among other things, EF support cognitive flexibility by allowing inhibition of automatic responses in favour of obtaining future goals. READ MORE

  6. 4. Behaviour and life-history responses to chick provisioning under risk of nest predation

    Author : Sönke Eggers; David Winkler; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Biology; Chick provisioning; clutch size; delayed dispersal; nest concealment; nest predation; parental care; population decline; Perisoreus infaustus; Siberian jay; Biologi; Biology; Biologi; populationsbiologi; Population Biology;

    Abstract : This thesis examines risk management in breeding Siberian jays (Perisoreus infaustus), which is indigenous to the northern taiga. Parent behaviour and the nest are cryptic. A new nest is built each year. It is placed on spruce or pine branches close to the trunk and well insulated with lichens, feathers and reindeer hair. READ MORE

  7. 5. Traditional use of wildlife in modern society : public attitudes and hunters' motivations

    Author : Per Ljung; Sveriges lantbruksuniversitet; Sveriges lantbruksuniversitet; []
    Keywords : SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES;

    Abstract : Populations of many large mammals and birds are increasing in many parts of Europe and North America. At the same time, the number of hunters is generally decreasing and an increasing proportion of people live in urban areas. READ MORE