Nest and Eggs of the Marsh Antwren (Stymphalornis acutirostris): The Only Marsh-Dwelling Thamnophilid

Bianca L. Reinert; Ricardo Belmonte-Lopes; Marcos R. Bornschein; Daiane D. Sobotka; Leandro Corrêa; Marcio R. Pie; Marco A. Pizo

doi:10.1676/11-099.1

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1 June 2012 Nest and Eggs of the Marsh Antwren (Stymphalornis acutirostris): The Only Marsh-Dwelling Thamnophilid

Bianca L. Reinert, Ricardo Belmonte-Lopes, Marcos R. Bornschein, Daiane D. Sobotka, Leandro Corrêa, Marcio R. Pie, Marco A. Pizo

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The Wilson J. of Ornithology, 124(2):286-291 (2012). https://doi.org/10.1676/11-099.1

Abstract

We describe the nest and eggs of the Marsh Antwren (Stymphalornis acutirostris), a recently described species which is the only member of the Thamnophilidae restricted to marsh habitats. We conducted 1,560 hrs of nest searching in tidal marshes of southern Brazil and found 178 nests. All nests were of dry fibers, straws, and silk. Nineteen plant species were used for nest attachment. All nests had a clutch of two white eggs with several irregular brown spots scattered over the entire egg, concentrated at the middle or the largest pole. The strategy of nest attachment to vertical structures used by the Marsh Antwren was previously unknown in the Thamnophilidae.

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Bianca L. Reinert, Ricardo Belmonte-Lopes, Marcos R. Bornschein, Daiane D. Sobotka, Leandro Corrêa, Marcio R. Pie, and Marco A. Pizo "Nest and Eggs of the Marsh Antwren (Stymphalornis acutirostris): The Only Marsh-Dwelling Thamnophilid," The Wilson Journal of Ornithology 124(2), 286-291, (1 June 2012). https://doi.org/10.1676/11-099.1

Received: 14 June 2011; Accepted: 1 December 2011; Published: 1 June 2012

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