14 Result(s)

Article

Slow song syllable rates provoke stronger male territorial responses in Eurasian Reed Warblers (Acrocephalus scirpaceus)

In birds, male song is mainly driven by sexual selection, whereby several song characteristics have been demonstrated to be important. In this context, the number of syllables produced per time unit (syllable ...

Herbert Hoi, Alžbeta Darolová, Ján Krištofík in Journal of Ornithology (2023)

Article

Behavioural response of Eurasian Blackcaps to acoustically simulated conspecific and heterospecific male intruders

Interspecific territoriality can frequently be observed in the animal kingdom, including birds. One important factor driving the degree of interspecific territoriality is competition for resources. Other influ...

Alžbeta Darolová, Ján Krištofík, Felix Knauer, Herbert Hoi in Journal of Ornithology (2020)

Article

The effect of the ectoparasite Carnus hemapterus on immune defence, condition, and health of nestling European Bee-eaters

One way that parasites influence host survival and fitness is by competing with their hosts for resources that would otherwise be used for growth and immune system development. Thus resource availability, infl...

Herbert Hoi, Alžbeta Darolová, Ján Krištofík, Christine Hoi in Journal of Ornithology (2018)

Article

Housekee** by lodgers: the importance of bird nest fauna on offspring condition

Bird nests are designed to contain and protect parents, eggs and nestlings and to facilitate optimal safety and climatic conditions from egg-laying to fledging offspring. Bird nests also provide optimal condit...

Ján Krištofík, Alžbeta Darolová, Christine Hoi, Herbert Hoi in Journal of Ornithology (2017)

Article

Vegetation type variation in marsh habitats: does it affect nest site selection, reproductive success, and maternal investment in Reed Warblers?

Habitat choice may have an important impact on survival and fitness of an individual. Besides an individual’s intrinsic features, such as resource-holding potential, experience, age, and habitat characteristic...

Alžbeta Darolová, Ján Krištofík, Herbert Hoi in Journal of Ornithology (2014)

Article

Arthropods (Acarina, Coleoptera, Siphonaptera) in nests of hoopoe (Upupa epops) in Central Europe

In 1993–1995 and 2009–2011, during investigation of reproduction biology of hoopoe, 63 nests of this species were collected after fledging of the chicks in Slovakia and Austria and their arthropod fauna was an...

Ján Krištofík, Peter Mašán, Zbyšek Šustek, Soňa Nuhličková in Biologia (2013)

Article

Song complexity in male marsh warblers: does it reflect male quality?

Male song is known to be important in the mate choice of birds, as different song features reflect different traits of the singer. The reason why song complexity, in this context, should reflect the quality of...

Alžbeta Darolová, Ján Krištofík, Herbert Hoi, Michael Wink in Journal of Ornithology (2012)

Article

Food preferences and mound-building behaviour of the mound-building mice Mus spicilegus

Optimal foraging strategies and food choice are influenced by various factors, e.g. availability, size and caloric content of the food type and predation risk. However, food choice criteria may change when foo...

Michaela Hölzl, Ján Krištofík, Alžbeta Darolová, Herbert Hoi in Naturwissenschaften (2011)

Article

Association of pseudoscorpions with different types of bird nests

The hypothesis of associating pseudoscorpions with bird nest types was tested on the basis of an analysis of 480 specimens. Eleven pseudoscorpion species were found in 171 nests of 28 different bird species co...

Jana Christophoryová, Zuzana Krumpálová, Ján Krištofík, Zlatica Országhová in Biologia (2011)

Article

Phenotypic plasticity in the greater mouse-eared bat in extremely different roost conditions

Bats use various roost types with a wide spectrum of ecological features. The greater mouse-eared bat Myotis myotis (Borkhausen, 1797), creates nurseries in attics and caves in Central Europe. The stable low temp...

Marcel Uhrin, Peter Kaňuch, Ján Krištofík, Ladislav Paule in Acta Theriologica (2010)

Article

Arthropods in the nests of lesser spotted eagle (Aquila pomarina)

In 2001–2007, altogether 57 nests of lesser spotted eagle were collected in the Orava region in northwestern Slovakia and four groups of arthropods were extracted from them. Richest in number of species and in...

Ján Krištofík, Peter Mašán, Zbyšek Šustek, Dušan Karaska in Biologia (2009)

Article

Arthropods (Pseudoscorpionidea, Acarina, Coleoptera, Siphonaptera) in nests of the bearded tit (Panurus biarmicus)

In the period 1993–2006, during investigation of reproduction biology of the bearded tit, 106 deserted nests of the species were collected in Slovakia, Austria and Italy and their arthropod fauna was analyzed....

Ján Krištofík, Peter Mašán, Zbyšek Šustek in Biologia (2007)

Article

First record of Cimex pipistrelli (Cimicidae) in Slovakia

Ján Krištofík, Peter Kaňuch in Biologia (2006)