. Bulletin of the British Ornithologists' Club. Birds. s "B > 6- o z~ Ul N 3 X O JS UJ — q: 2- OK •4MlrtliNMMM4<''i .N«i4»» 8. 8 TIME (S) Figure 1. Sonagrams of the song of three populations of the Large-headed Flatbill Ramphotrigon megacephala in Brazil. A, Ji-Parana, Rondonia State, Amazonia (JV 495/5b); B, Barra do Gargas, Mato Grosso State, central Brazil (ALPA 21/10); C, Parque Estadual Intervales, Sao Paulo State, southeastern Brazil (ALPA 26/1+2). All recordings are deposited in the Libary of Neotropical Sounds (ASN) at the Bioacoustical Laboratory of the Universi
. Bulletin of the British Ornithologists' Club. Birds. s "B > 6- o z~ Ul N 3 X O JS UJ — q: 2- OK •4MlrtliNMMM4<''i .N«i4»» 8. 8 TIME (S) Figure 1. Sonagrams of the song of three populations of the Large-headed Flatbill Ramphotrigon megacephala in Brazil. A, Ji-Parana, Rondonia State, Amazonia (JV 495/5b); B, Barra do Gargas, Mato Grosso State, central Brazil (ALPA 21/10); C, Parque Estadual Intervales, Sao Paulo State, southeastern Brazil (ALPA 26/1+2). All recordings are deposited in the Libary of Neotropical Sounds (ASN) at the Bioacoustical Laboratory of the Universidade Estadual de Campinas-UNICAMP. Sonagrams were made on a Macintosh Classic coupled to a MacRecorder Sound System Brazil; JV 495/5b-ASN) and Parque Estadual Intervales, Capao Bonito (southern Sao Paulo State, Brazil; ALPA 26/1+2-ASN). The song structure of the Sao Marcos bird (the disyllabic whu-hoo) is very similar to that of the birds from Amazonia (Rondonia) and southeastern Brazil (Fig. 1). Though a larger sample size is needed, preliminary measures of the duration of the notes of the song of the Sao Marcos bird indicate its closer relationship to Amazonian birds (Table 1). The range extension here reported fills a gap in the spotty distribution pattern of R. megacephala, which until 1939 was known only from a few specimens from southeastern Brazil and adjacent. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original British Ornithologists' Club. London : The Club
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectbirds, bookyear1893
