Sökning: "perching"

Visar resultat 1 - 5 av 7 uppsatser innehållade ordet perching.

  1. 1. Neophobia and parental care in collared flycatchers (Ficedula albicollis)

    Kandidat-uppsats, Uppsala universitet/Institutionen för biologisk grundutbildning

    Författare :Maja Svedberg; [2023]
    Nyckelord :Neophobia; collared flycatcher; ficedula albicollis; parental care;

    Sammanfattning : Parental care can be important especially in passerine birds and can depend on environment, food availability and behaviour. A behaviour that can affect the food supply for the offspring is neophobia, the fear of novel objects. The more fear the bird exhibits the less it visits the nest with food. LÄS MER

  3. 2. Not everything that glitters is gold : does linear infrastructure create an ecological trap for golden eagles?

    Master-uppsats, SLU/Dept. of Wildlife, Fish and Environmental Studies

    Författare :Michelle Etienne; [2020]
    Nyckelord :HIREC; animal ecology; animal movement; animal behaviour; integrated step selection function; wildlife traffic accidents; maladaptive behaviour; fitness; habitat selection;

    Sammanfattning : Animals can be caught in an “ecological trap” when they select for seemingly attractive habitats at the expense of their fitness. This maladaptive behaviour is often a consequence of human induced rapid changes in their natal environment, such as the development of linear infrastructure, where roads and railways create novel feeding conditions through traffic induced mortality of other species and powerline areas provide perching or nesting sites. LÄS MER

  4. 3. Sittpinneanvändning och beteende nattetid hos långsamväxande slaktkycklingar (Gallus gallus domesticus)

    Uppsats för yrkesexamina på avancerad nivå, SLU/Dept. of Animal Environment and Health

    Författare :Ella Sigvardsson; [2018]
    Nyckelord :slaktkycklinghybrider; sittpinneanvändning; djurvälfärd; beteende;

    Sammanfattning : .... LÄS MER

  5. 4. Perching behaviour and disturbance during sleep in three hybrids of broiler chicken (Gallus gallus domesticus)

    Kandidat-uppsats, SLU/Dept. of Animal Environment and Health

    Författare :Maja Wedin; [2016]
    Nyckelord :broiler chicken; perching; sleeping behaviour; welfare; hybrids; organic production;

    Sammanfattning : The aim of broiler chicken production is to breed chickens with high growth rate and muscle/bone ratio. However, this selection has affected the physiology of the broilers and as a result broilers display a physique that inhibits them in executing behaviours that they are motivated to perform. LÄS MER

  7. 5. Comparison of behaviour and health of two broiler hybrids with different growth rates

    Master-uppsats, SLU/Dept. of Animal Environment and Health

    Författare :Sofia Wilhelmsson; [2016]
    Nyckelord :Broiler; chicken; welfare; health; behaviour; gait; fear; perching; dustbathing;

    Sammanfattning : Until recently fast growing broiler hybrids have been used exclusively in both conventional and organic broiler production in Sweden. This study aimed to quantify differences in behaviour and health between a fast growing hybrid (Ross 308) and a slower growing hybrid (Rowan Ranger). LÄS MER