INVESTIGADORES
CARDONI Daniel Augusto
artículos
Título:
Breeding Success and Social Mating System of the Bay-capped Wren-Spinetail (Spartonoica maluroides)
Autor/es:
PAULO E. LLAMBÍAS; VALENTINA FERRETTI; DANIEL A. CARDONI; JESÚS E. MALDONADO
Revista:
WILSON JOURNAL OF ORNITHOLOGY
Editorial:
WILSON ORNITHOLOGICAL SOC
Referencias:
Año: 2009 vol. 121 p. 803 - 807
ISSN:
1559-4491
Resumen:
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We studied breeding biology, parental roles, and
social mating system of the Bay-capped Wren-Spinetail (Spartonoica maluroides), a habitat specialist
furnariid, in the Argentinean pampas. We found 42 nests during 20042007, two
during egg laying, 28 during incubation, and 12 with nestlings. Mean clutch
size was 3.17 eggs (n 5 29), the incubation period
was 13 days, and nestlings remained in the nest for 12 days before fledgling.
Bay-capped Wren-Spinetails are socially monogamous; both males and female develop
a brood patch and contribute to incubation, brooding, and provisioning of
nestlings. Wren-Spinetails
are unique among furnariids as they build an open cup
nest with a few presenting a loose domed roof. Breeding success of Bay-capped
Wren-Spinetails was higher (total probability of nesting success 5 0.508) than other
species of sympatric passerines because of low nest predation and high nest
survival rates during incubation and nestling rearing stages.
