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Red and Green Macaw feeding and diet journal

Red parrot Scarlet Macaw, Ara macao, bird sittin on the branch with food, Brazil. Wildlife scene from tropical forest. Beautiful parrot on tree branch in nature habitat.

Foraging observations

1 Diet composition of reintroduced -and- (Ara chloropterus) reflects
2 gradual adaption to life in the wild
Noelia L. Volpe1
*, Bettina Thalinger2,6, Elisabet Vilacoba3
, Thomas W.A. Braukmann2,4 3 , Adrián
S. Di Giacomo1
, Igor Berkunsky5
, Darío A. Lijtmaer3
, Dirk Steinke2,6 and Cecilia Kopuchian1 4
1 6 Laboratorio de Biología de la Conservación, Centro de Ecología Aplicada del Litoral
7 (CECOAL), CONICET, Corrientes, Argentina.
2 8 Centre for Biodiversity Genomics, University of Guelph, Guelph, Ontario, Canada.
3 9 División Ornitología, Museo Argentino de Ciencias Naturales “Bernardino Rivadavia” MACN
10 CONICET., Buenos Aires, Argentina.
4 11 Department of Pathology, Stanford University, Stanford, California, USA.
5 12 Instituto Multidisciplinario sobre Ecosistemas y Desarrollo Sustentable. Universidad Nacional
13 del Centro, Tandil, Buenos Aires, Argentina.
6 14 Department of Integrative Biology, College of Biological Science, University of Guelph,
15 Guelph, Ontario, Canada.
16 * Corresponding author: [email protected]


metabarcoding has emerged as an alternative for obtaining highly resolved data on diet
composition. In this study we use a combination of both techniques to characterize the breadth
and composition of the reintroduced macaws’ diet.

direct field observations and metabarcoding of feces as techniques to assess diet composition.
Individuals fed on a variety of plant species (n = 49) belonging to a broad phylogenetic spectrum
(28 families). Dietary richness estimated by direct observation and metabarcoding was similar,

species not recorded by the other method.
for observational data, the rate of species-detection per sampling day was higher for
obtain the most accurate account of the total diversity of the diet of a species. The ability of the
reintroduced macaws to successfully exploit local food resources throughout the year indicates a
good level of adjustment to the release site, an important step towards the creation of a stable,
self-sustaining population of -and- in Northern Argentina.
Keywords: Ara chloropterus, Conservation, Diet, Frugivory, Metabarcoding, -and-green
Macaw, Reintroduction, Trophic ecology


43 En el transcurso de los últimos dos siglos, el Guacamayo Rojo (Ara chloropterus) se ha
44 extinguido en la Argentina. Buscando recuperar su rol ecológico tanto de dispersor como de
45 depredador de semillas de gran tamaño, se comenzó un proyecto de reintroducción de la especie
46 en el Parque Nacional Iberá, en la región noreste del país. La capacidad para encontrar alimento

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