Welcome to the Ornithological Congress of the Americas! Puerto Iguazú, Misiones, Argentina, from 8–11 August, 2017 Puerto Iguazú is located in the heart of the interior Atlantic Forest and is the portal to the Iguazú Falls, one of the world’s Seven Natural Wonders and a UNESCO World Heritage Site. The area surrounding Puerto Iguazú, the province of Misiones and neighboring regions of Paraguay and Brazil offers many scenic attractions and natural areas such as Iguazú National Park, and provides unique opportunities for birdwatching. Over 500 species have been recorded, including many Atlantic Forest endemics like the Blue Manakin (Chiroxiphia caudata), the emblem of our congress. This is the first meeting collaboratively organized by the Association of Field Ornithologists, Sociedade Brasileira de Ornitologia and Aves Argentinas, and promises to be an outstanding professional experience for both students and researchers. The congress will feature workshops, symposia, over 400 scientific presentations, 7 internationally renowned plenary speakers, and a celebration of 100 years of Aves Argentinas! Enjoy the book of abstracts! ORGANIZING COMMITTEE CHAIR: Valentina Ferretti, Instituto de Ecología, Genética y Evolución de Buenos Aires (IEGEBA- CONICET) and Association of Field Ornithologists (AFO) Andrés Bosso, Administración de Parques Nacionales (Ministerio de Ambiente y Desarrollo Sustentable) Reed Bowman, Archbold Biological Station and Association of Field Ornithologists (AFO) Gustavo Sebastián Cabanne, División Ornitología, Museo Argentino de Ciencias Naturales “Bernardino Rivadavia” (CONICET) Pedro Develey, SAVE/ Birdlife Brazil y Sociedade Brasileira de Ornitologia (SBO) Adrián S. Di Giacomo, Centro de Ecología Aplicada del Litoral (CECOAL-CONICET) and Aves Argentinas/Asociación Ornitológica del Plata Carla Suertegaray Fontana, Pontifícia Universidade Católica do Rio Grande do Sul and Sociedade Brasileira de Ornitologia (SBO) Alex Jahn, Universidade de Sao Paulo, Sociedade Brasileira de Ornitologia (SBO) and Association of Field Ornithologists (AFO) Cecilia Kopuchian, Centro de Ecología Aplicada del Litoral (CECOAL-CONICET) and Aves Argentinas/Asociación Ornitológica del Plata Paul Rodewald, Cornell Laboratory of Ornithology and Association of Field Ornithologists (AFO) Matthew Shumar, Ohio Bird Conservation Initiative and Association of Field Ornithologists (AFO) LOCAL ORGANIZING COMMITTEE Carolina Miño, Instituto de Biología Subtropical, Nodo Puerto Iguazú, CONICET Francisco Gonzalez Taboas, Aves Argentinas Nazaret Pared, iMibio REVIEWERS OF ABSTRACTS AVES ARGENTINAS Gustavo Sebastián Cabanne Cecília Kopuchian Adrián Di Giacomo Pablo Yorio Paulo Llambías Pablo Tubaro SOCIEDADE BRASILEIRA DE ORNITOLOGIA Leandro Bugoni Marco Aurélio Pizo Carla Suertegaray Fontana ASSOCIATION OF FIELD ORNITHOLOGISTS Alex Jahn Christine Stracey Matt Reudink THE STUDENT AWARD COMMITTEE CO-CHAIRS Viviana Massoni Angela Tringali Helder Farias Pereira de Araujo SPONSORS TABLE OF CONTENTS PLENARIES ..................................................................................................................................... 8 SYMPOSIA ................................................................................................................................... 13 APPLIED STATISTICS ................................................................................................................ 13 CITIZEN SCIENCE ..................................................................................................................... 15 GENOMIC ADVANCES 1 .......................................................................................................... 20 GENOMIC ADVANCES 2 .......................................................................................................... 25 INTERNATIONAL SHOREBIRD SURVEY ................................................................................... 29 MIGRATION IN SOUTH AMERICA ........................................................................................... 31 MIXED SPECIES FLOCKS .......................................................................................................... 35 MOVEMENT ECOLOGY ............................................................................................................ 38 ORAL SESSIONS ........................................................................................................................... 43 AGRICULTURAL ECOLOGY ...................................................................................................... 43 BEHAVIOR ............................................................................................................................... 47 BIRDS IN URBAN & DEVELOPED SYSTEMS ............................................................................. 51 BREEDING BIOLOGY ................................................................................................................ 56 CLIMATE .................................................................................................................................. 61 COMMUNITY ECOLOGY .......................................................................................................... 65 CONSERVATION ...................................................................................................................... 69 CONSERVATION OF THREATENED & ENDANGERED SPECIES ................................................ 74 ECOLOGICAL INSIGHTS ........................................................................................................... 78 ECOLOGICAL MODELS ............................................................................................................. 83 EVOLUTION ............................................................................................................................. 86 HABITAT RELATIONSHIPS ....................................................................................................... 92 LANDSCAPE ECOLOGY ............................................................................................................ 96 MIGRATION & STOPOVER BIOLOGY .................................................................................... 100 MORPHOLOGY ...................................................................................................................... 103 MOVEMENTS & DISPERSAL .................................................................................................. 106 PARENTAL CARE .................................................................................................................... 110 PHYLOGEOGRAPHY............................................................................................................... 113 PHYSIOLOGY, HORMONES, & IMMUNOLOGY ..................................................................... 119 SOCIAL BEHAVIOR ................................................................................................................ 122 SONG & VOCALIZATION ....................................................................................................... 126 SURVEY TECHNIQUES, METHODS, & TECHNOLOGICAL ADVANCES ................................... 129 POSTER SESSIONS ..................................................................................................................... 134 BEHAVIOR ............................................................................................................................. 134 BIOGEOGRAPHY AND PHYLOGEOGRAPHY .......................................................................... 137 BREEDING BIOLOGY .............................................................................................................. 141 BROOD PARASITISM ............................................................................................................. 157 COMMUNITY ECOLOGY ........................................................................................................ 159 CONSERVATION .................................................................................................................... 166 DIET AND FORAGING ECOLOGY ........................................................................................... 178 DISEASES AND PARASITES .................................................................................................... 192 ECOLOGICAL MODELS AND SURVEY METHODS, USE OF TECHNOLOGY ............................. 198 ECOTOXICOLOGY, PHYSIOLOGY, HORMONES, AND IMMUNOLOGY .................................. 202 GENERAL ECOLOGY ............................................................................................................... 209 HABITAT RELATIONSHIPS ..................................................................................................... 212 MATING SYSTEMS, SEXUAL SELECTION ............................................................................... 218 MOVEMENTS AND DISPERSAL, MIGRATION AND STOPOVER BIOLOGY ............................ 220 PHYLOGENETICS, EVOLUTION, SYSTEMATICS, TAXONOMY AND MORPHOLOGY ............. 226 POPULATION BIOLOGY ......................................................................................................... 235 RECORDS AND INVENTORIES ............................................................................................... 238 URBAN AND AGRICULTURAL ECOLOGY ............................................................................... 245 PLENARIES ON THE IMPORTANCE OF STUDYING NATURAL HISTORY WHILE THINKING ABOUT