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1 March 2001 Aspects of the Breeding Biology of the Crested Gallito
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I studied the breeding biology of the Crested Gallito (Rhinocrypta lanceolata) in the Reserve of Ñacuñán (western Argentina) from September 1995 to January 1999. The laying period extended from mid-September to late January, a month longer than previous reports from Argentina. The closed nest was globular with a side entrance and was made primarily of grasses. In Ñacuñán, this species preferred to nest in atamisque (Capparis atamisquea). Atamisques selected for nesting were 1.6–3.5 m in height, and nests were 1.0–2.1 m above the ground. Mean clutch size (2.2 eggs) did not show a year or a seasonal variation. Mean egg size and mass were less than those reported previously. The incubation period lasted 16–17 d and the nestling period 14–15 d. Eggs hatched asynchronously. No cases of brood parasitism by Shiny Cowbird (Molothrus bonariensis) were observed.

EDUARDO T. MEZQUIDA "Aspects of the Breeding Biology of the Crested Gallito," The Wilson Bulletin 113(1), 104-108, (1 March 2001).[0104:AOTBBO]2.0.CO;2
Received: 31 July 2000; Accepted: 1 February 2001; Published: 1 March 2001
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