La Tour du Valat

Article

No evidence of genetic variation in microsatellite and mitochondrial DNA markers among remaining populations of the Strange-tailed Tyrant Alectrurus risora, an endangered grassland species

Adrian S. Di Giacomo, Auteur ; Alejandro G. Di Giacomo, Auteur ; Rafi Kliger, Auteur ; Juan C. Reboreda, Auteur ; Ralph Tiedemann, Auteur ; Bettina Mahler, Auteur

Dans Bird Conservation International (25(2) JUN 2015)

The Strange-tailed Tyrant Alectrurus risora (Aves: Tyrannidae) is an endemic species of southern South American grasslands that suffered a 90% reduction of its original distribution due to habitat transformation. This has led the species to be c[...]

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Article

Breeding biology and conservation of the Marsh Seedeater Sporophila palustris

Jeferson Vizentin-Bugoni, Auteur ; Juan I. Areta, Auteur ; Alejandro G. Di Giacomo, Auteur ; Adrian S. Di Giacomo, Auteur ; Fernando Jacobs, Auteur ; Marco A. Afonso Coimbra, Auteur ; Rafael A. Dias, Auteur

Dans Bird Conservation International (23(2) JUN 2013)

The Marsh Seedeater Sporophila palustris is one of the most endangered and least known of the capuchino seedeaters. Breeding populations are patchy, occurring in north-east Argentina, southern Brazil, and Uruguay. We present data on the breeding[...]

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Article

Effects of grassland burning on reproductive success of globally threatened Strange-tailed Tyrants Alectrurus risora

Alejandro G. Di Giacomo, Auteur ; Adrian S. Di Giacomo, Auteur ; Juan C. Reboreda, Auteur

Dans Bird Conservation International (21(4) DEC 2011)

The north-east of Argentina contains a high number of globally threatened grassland birds and is increasingly managed for livestock, with annual burning in remaining natural grasslands. The Strange-tailed Tyrant Alectrurus risora, a globally thr[...]

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Article

Increased plumage darkness of female Shiny Cowbirds Molothrus bonariensis in the subtropics: an adaptation to bacterial degradation?

Bettina Mahler, Auteur ; Nancy I. Lopez, Auteur ; Alejandro G. Di Giacomo, Auteur ; Juan C. Reboreda, Auteur

Dans Ibis (152(4) OCT 2010)

The Shiny Cowbird Molothrus bonariensis is a sexually dichromatic species, in which males have blackish-blue iridescence and females are dull brown. However, in some subtropical parts of its distribution, females show a plumage polymorphism that[...]

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Article

Observations of Strange-tailed Tyrants (Alectrurus risora) and other grassland birds following army ants and armadillos

Adrian S. Di Giacomo, Auteur ; Alejandro G. Di Giacomo, Auteur

Dans Journal of Field Ornithology (77(3) SUM 2006)

Birds in Neotropical forests frequently follow army ants to forage for insects. Here we report the first record of several species of Neotropical grassland birds following army ants (Labidus praedator) and yellow armadillos (Euphractus sexcinctu[...]

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Article

Parental care in Tawny-bellied (Sporophila hypoxantha) and Rusty-collared (S. collaris) Seedeaters

Carolina Facchinetti, Auteur ; Alejandro G. Di Giacomo, Auteur ; Juan C. Reboreda, Auteur

Dans Wilson Journal of Ornithology (The) (120(4) 2008)

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Article

Screaming cowbird parasitism of nests of solitary caciques and cattle tyrants

Alejandro G. Di Giacomo, Auteur ; Bettina Mahler, Auteur ; Juan C. Reboreda, Auteur

Dans Wilson Journal of Ornithology (The) (122(4) 2010)

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