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Temporal pattern of vocal activity of the Water Rail Rallus aquaticus and the Little Crake Porzana parva in the breeding season

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Abstract:

In the Water Rail the patterns of the two main types of vocalization were quite different: the announcement call was uttered throughout the breeding season with two peaks, one in April and the other in early June, but the courtship call occurred only in the pre-laying period. The vocalization period of the Little Crake is short but intensive, peaking before the start of incubation. In general, Water Rails produced more vocalizations in the evening than in the morning. The vocal activity of the Little Crake peaked at dawn. In both species a peak in vocal output occurred shortly before sunrise and before sunset.

Keywords: LITTLE CRAKE; PORZANA PARVA; RALLUS AQUATICUS; VOCAL ACTIVITY; WATER RAIL

Document Type: Research Article

DOI: http://dx.doi.org/10.3161/0001645054742688

Publication date: June 1, 2005

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