
Katarzyna ŁosakAdam Mickiewicz University in Poznań | UAM · Institute of Environmental Biology
Katarzyna Łosak
PhD in biology
About
19
Publications
2,578
Reads
How we measure 'reads'
A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. Learn more
351
Citations
Introduction
Additional affiliations
September 1998 - present
Publications
Publications (19)
The Yellow-breasted Barbet (Trachyphonus margaritatus) is a group-living and chorusing bird species. However, its vocal repertoire remains poorly described. In this study, we measured the acoustic features of four distinct vocalisations as well as the daily calling activity of barbets at 11 roosting cavity sites. We found that bird’s peak of callin...
Songbirds learn to sing by imitating their conspecific songs through social learning. It is commonly thought that in species with small repertoires, so‐called crystallization of the song repertoire takes place before the first breeding attempt and afterwards their repertoires remain unchanged. However, the number of studies in which individual song...
The rapid development of wind energy may have negative effects on bird populations, including collisions with turbines, displacement due to disturbance or habitat loss, indirect effects of reduced breeding success and barrier effects. This challenging conservation issue has gained a great deal of interest, but the noise generated by turbines has be...
Here, we describe three cases of atypically singing Ortolan Bunting males in the Wielkopolska (Greater Poland, W Poland). We studied the species in Wielkopolski National Park and vicinity in 1998–2014, recording 40–60 males every year. The cases described here represent the only atypically songs recorded during all controls. Case 1: male singing st...
Several studies demonstrated that bird song functions as a first line of territorial defence. The efficiency of deterring rivals depends strongly on the strategy of singing used (e.g. alternating/overlapping singing, singing with low/high rate, matching song type of a rival or singing different type). Causes of between males variation during counte...
It is believed that bird song has evolved as a reliable signal of quality of displaying individ-uals. Recent research has focused on costs of development of complex song. In the present paper we test if the acquired repertoire size is costly to maintain. We compared changes in song structure in male Whitethroats (Sylvia communis) after 48 h exposur...
Ortolan buntings, Emberiza hortulana, have local dialects in central and southern Europe. Neighbouring males typically share the same final phrase of a song, which seems to be important for dialect recognition. We studied ortolan buntings in Norway, where a small and isolated population occurs with no local dialect in the above-mentioned sense. Nor...
Interactive playback experiments were used to study the signal value to the corn bunting, Miliaria calandra, of alternating and overlapping singing. We subjected 15 males to two stimuli that differed in the temporal pattern of song
playback (alternating or overlapping). We measured eight characteristics of the males’ response in two categories—song...
2006. How do birds search for breeding areas at the landscape level? Interpatch movements of male ortolan buntings. Á Ecography 29: 886 Á898. Animal movements at large spatial scales are of great importance in population ecology, yet little is known due to practical problems following individuals across landscapes. We studied the whole Norwegian po...
Results of this study indicate that in the Ortolan Bunting Emberiza hortulana, syllables of the same shape on sonograms (i.e. homologue syllables) often significantly differ between males in frequency parameters. Typically, homologue syllables of different males in the studied population had a similar bandwidth but shifted minimal and maximal frequ...
We tested whether the temporal parameters of corncrake (Crex crex) call change sea-sonally and/or individually. We defined a new, compound variable called RHYTHM, which quantitatively describes how corncrake call is perceived. Temporal parameters of calls, including RHYTHM, were significantly associated with both the time within the breeding season...
Studying atypical behaviour of animals often gives an unique opportunity to better understand why and how typical behaviours develop and function. For example, in the case of bird song, some crucial information on song development was gathered thanks to the neurobiological experiments disturbing auditory feedback started by Konishi (1963, 1964). Sp...
Interactive playback experiments were used to study the signal value of alternating and overlapping singing in the Yellowhammer Emberiza citrinella. We carried out interactive playback experiments in which 13 males were subjects of two treatments that differed in temporal pattern of playback song delivery (alternating vs overlapping). We measured 1...
In 2001, we began studies on song variation and their possible function(s) in isolated and declining population of Ortolan BuntingEmberiza hortulana in Norway (Osiejuk et al . 2003). In this communi-cation we present strong evidence of an Ortolan Bunting singing phrases typical for the closely re-lated Yellowhammer E. citrinella . To our knowl-edge...
Corn buntings in the Wielkopolska region (W Poland) show a clear local dialect pattern of microgeographic song variation only in relatively dense and stable populations, which inhabited typical farmland landscape. In less preferred habitats, where males were much more dispersed, or in sites that where colonized recently, we found no such a pattern...
Dale, S. 2003: Song structure and repertoire variation in ortolan bunting (Emberiza hortulana L.) from isolated Norwegian population. — Ann. Zool. Fen-nici 40: 3–16. This paper describes song structure and repertoire variation in ortolan buntings (Emberiza hortulana) from an isolated and declining Norwegian population, analysed by using the minimal...