We are a group of researchers and students from Faculty of Science, University of South Bohemia, located in České Budějovice, Czech Republic. We generally examine the prey-predator interactions uncovering the process of recognition and categorization of such categories.
Acoustical communication in birds (PDF) Are you interested in bird acoustical communication? Would you like to combine both work in field and at your computer desk? Don’t hesitate and do bioacoustics! Bachelor / Master thesis Individuality among birds, territorial behaviour, … Continue reading
Life strategy of arctic tern (PDF) Who is arctic tern (Sterna paradisea)? A representative of Sterna genus (closely related to Laridae) which nests in arctic areas and wintes in regions close to Antarctica. It also performs the longest migration routes … Continue reading
Research of bird foraging behaviour (PDF) Do you like green biology, but you don’t want to spend the whole summer in field? Do you prefer to work ‘inside’, but you still want to work with ‘live’ material? Do you like … Continue reading
Red-backed shrike – antipredatory strategy, personality, and cognitive abilities (PDF) Do you like ethology? Do you want to experience the beauties (and sometimes sorrows) of field experiments? Come and join us in research of red-backed shrikes (Lanius collurio). Bachelor / … Continue reading
Ecology of birds living in human settlements and agricultural landscape (PDF) Bachelor / Master thesis Work in field as well as in a lab, or just evaluation of already existing data Learning useful modern methods which are applicable in practice … Continue reading
Antipredatory behaviour of corvids (PDF) Do you want to work with one of the most intelligent bird species? Do you want to learn something about their cognitive abilities? Do you want to cooperate with one of the most prestigious teams … Continue reading
Physiological response of birds to fear (PDF) Bachelor / Master thesis Literary review Study of chosen physiological parametres during cage experiments with great tits (Parus major) If interested, contact Jája Beránková via her email email@example.com Other available thesis topics: Antipredatory … Continue reading
Growing evidence exists that aposematic and toxic prey may be included in a predator’s diet when the predator experiences physiological stress. The tree sparrow Passer montanus is known to have a significant portion of aposematic and toxic ladybirds in its natural diet. Here, we present experiments testing the attack and eating rate of the tree sparrow toward the invasive aposematic harlequin ladybird Harmonia axyridis. We wondered whether the sparrow’s ability to prey on native ladybirds predisposes them to also prey on harlequin ladybirds. We compared the attack and eating rates of tree sparrows of particular age and/or experience classes to test for any changes during
ontogeny (hand-reared x young wild-caught x adult wild-caught) and with differing perceived levels of physiological stress (summer adult x winter adult). Winter adult tree sparrows commonly attacked and ate the offered ladybirds with no evidence of disgust or metabolic difficulties after ingestion. Naïve and wild immature tree sparrows attacked the ladybirds but hesitated to eat them. Adult tree sparrows caught in the summer avoided attacking the ladybirds. These results suggest that tree sparrows are able to cope with chemicals ingested along with the ladybirds. This preadaptation enables them to include ladybirds in their diet; though they commonly do this only in
times of shortage in insect availability (winter). Young sparrows showed avoidance toward the chemical protection of the ladybirds.
Back to scientific papers.
- Ontogeny of individual and litter identity signaling in grunts of piglets
- The nest defence by the red-backed shrike Lanius collurio – support for the vulnerability hypothesis
- Individual stability in vocalization rates of preweaning piglets
- Effect of the exploratory behaviour on a bird’s ability to categorize a predator