摘要:

Main or calling songs of cicadasMeimuna tavoyana, Platylomia nagarasingna, Platylomiasp. andPuranaaff.tigrinafrom Thailand are described and compared with some previously investigated species. ForM. tavoyanaa repeated tonal frequency modulated pattern is typical in addition to the broad band buzzing sound. Both closely related chorusing species ofPlatylomiashow broad band acoustic emissions with some degree of frequency band modulation. The song ofPuranaaff.tigrinafrom S. Thailand is the most complex, with sharply tuned spectral components (at 2300 and 9400 Hz) and rich amplitude modulation patterns.

ISSN:0952-4622    

DOI:10.1080/09524622.1995.9753278

出版商:Taylor & Francis Group    

年代:1995

数据来源: Taylor

摘要:

Variations in song pattern within and between individuals as well as between areas were investigated by analysing the song of 11 and 13 snow buntingPlectrophenax nivalismales at Longyearbyen and Ny Aalesund, respectively, on Spitsbergen (Svalbard).

ISSN:0952-4622    

DOI:10.1080/09524622.1995.9753279

出版商:Taylor & Francis Group    

年代:1995

数据来源: Taylor

摘要:

Parus majorandParus caeruleus palmensishave some song types in common. They consist of whistled element-types in different frequency ranges. Both species show territorial reactions to playback of the song-types belonging to the other species.P.c. palmensisdoes not share any songtypes with Central EuropeanParus caeruleus.This is confirmed by playback experiments with the different song types, which do not elicit any territorial behaviour. The songs ofP.c. palmensisalso differ from those of blue tits from any other Canary Island. They may be derived from contact calls of the Lanzarote population. They have been developed by young birds that had not yet learnt their songs when they colonized La Palma from Lanzarote without reaching any of the other Canary Islands. It is suggested that the uniform song repertoire was developed by adapting the already learned contact calls to each other. The similarities to song types ofP. majorare due to convergence rather than character displacement. All other Canary Island tit populations share the main features of their songs, which are characterized by quick frequency changes. It seems most likely that these islands have been colonized by birds which had already learnt their songs. Differences in song repertoires are mainly caused by drift events which happen to occur because of population bottlenecks during the colonization process.

ISSN:0952-4622    

DOI:10.1080/09524622.1995.9753280

出版商:Taylor & Francis Group    

年代:1995

数据来源: Taylor

ISSN:0952-4622    

DOI:10.1080/09524622.1995.9753281

出版商:Taylor & Francis Group    

年代:1995

数据来源: Taylor

ISSN:0952-4622    

DOI:10.1080/09524622.1995.9753282

出版商:Taylor & Francis Group    

年代:1995

数据来源: Taylor

ISSN:0952-4622    

DOI:10.1080/09524622.1995.9753283

出版商:Taylor & Francis Group    

年代:1995

数据来源: Taylor

ISSN:0952-4622    

DOI:10.1080/09524622.1995.9753284

出版商:Taylor & Francis Group    

年代:1995

数据来源: Taylor

ISSN:0952-4622    

DOI:10.1080/09524622.1995.9753285

出版商:Taylor & Francis Group    

年代:1995

数据来源: Taylor

ISSN:0952-4622    

DOI:10.1080/09524622.1995.9753286

出版商:Taylor & Francis Group    

年代:1995

数据来源: Taylor

ISSN:0952-4622    

DOI:10.1080/09524622.1995.9753287

出版商:Taylor & Francis Group    

年代:1995

数据来源: Taylor