Intra-tropical migration and wintering areas of Fork-tailed Flycatchers (Tyrannus savana) breeding in São Paulo, Brazil

  title={Intra-tropical migration and wintering areas of Fork-tailed Flycatchers (Tyrannus savana) breeding in São Paulo, Brazil},
  author={Alex E. Jahn and Nathaniel E. Seavy and Vanesa Bejarano and Marcela Benavides Guzmán and Ivan Celso Carvalho Provinciato and Marco Aur{\'e}lio Pizo and Maggie P. MacPherson},
  journal={Revista Brasileira De Ornitologia},
Fork-tailed Flycatchers ( Tyrannus s. savana ) breed from central to southern South America from September to January, migrating to northern South America to spend the non-breeding season. However, little is known of the migratory routes, rate, and timing of migration of those that breed in Brazil. In 2013, we attached light-level geolocators to breeding Fork-tailed Flycatchers breeding in Sao Paulo State. Data for six male flycatchers recaptured in 2014 indicates that they exhibited two fall… 
Bird Migration in South America: The Fork-tailed Flycatcher (Tyrannus savana) as a Case Study
The current state of knowledge about the drivers of songbird migration on the continent is reviewed, particularly those resulting from research on the Fork-tailed Flycatcher (Tyrannus savana), and future avenues for research are suggested to understand the mechanisms driving these patterns.
Do Fork-tailed Flycatchers (Tyrannus s. savana) stop to molt during fall migration?
This is the furthest south that this species has been found molting flight feathers and suggests that some Fork-tailed Flycatchers undertake fall molt-migration to Mato Grosso do Sul, suggesting the evolution of their life history strategies, seasonal interactions, and limitations they face throughout the year will be essential.
Breeding latitude predicts timing but not rate of spring migration in a widespread migratory bird in South America
This represents the first comparison of individual migratory strategies among conspecific passerines breeding at tropical vs. temperate latitudes and suggests that austral migrant Fork‐tailed Flycatchers in South America are not more time‐selected on spring migration than intratropical migrant Conspecifics.
A trophic niche shift in a South American migrant: Stable nitrogen isotope signatures in feathers of Fork-tailed Flycatchers (Tyrannus savana)
ABSTRACT Understanding how diet and life history strategies interact is important for exploring constraints of available nutrition on energetically expensive life history events in wild animals
Drivers of wing shape in a widespread Neotropical bird: a dual role of sex-specific and migration-related functions
The results suggest that wing shape of Fork-tailed Flycatchers is the result of a complex set of tradeoffs shaped by selective pressures exerted on both sexes, including the need to forage on the wing, evade predators and migrate efficiently.
Bird migration within the Neotropics
ABSTRACT Although the migration ecology of birds breeding in the Neotropics is still poorly studied relative to that of their counterparts breeding at north-temperate latitudes, studies conducted
Ten years tracking the migrations of small landbirds: Lessons learned in the golden age of bio-logging
ABSTRACT In 2007, the first miniature light-level geolocators were deployed on small landbirds, revolutionizing the study of migration. In this paper, we review studies that have used geolocators to
An overview of migratory birds in Brazil
Of the 1,919 species of birds recorded in Brazil, 198 (10.3%) are migratory, and 127 (64%) were classified as Migratory and 71 (36%) as Partially Migratories, while a few species wereclassified as Vagrant and eight could not be defined due to limited information available, or due to conflicting data.
First record of Touit melanonotus (Wied, 1820) (Aves: Psittaciformes: Psittacidae) in Cantareira State Park, Brazil: new colonization or simply unnoticed?
The first record and diet items (fruits of Ocotea sp.) in CSP are presented, discussing the potential for this psittacid going unnoticed in this area for a long period of time.


Migration Timing and Wintering Areas of Three Species of Flycatchers (Tyrannus) Breeding in the Great Plains of North America
ABSTRACT. Descriptions of intra- and interspecific variation in migratory patterns of closely related species are rare yet valuable because they can help assess how differences in ecology and
Long-Distance Bird Migration within South America Revealed by Light-Level Geolocators
ABSTRACT. Little is known about the timing of migration, migration routes, and migratory connectivity of most of the >230 species of birds that breed at south temperate latitudes of South America
Ecology and Demography of East-West Differences in Molt Scheduling of Neotropical Migrant Passerines
  • Environmental Science
  • 2010
AMONG NEOTROPICAL MIGRANT PASSERINES that breed in North America, adults of just five of 55 eastern breeders migrate in the fall before molting, whereas adults of at least 13 of 26 western breeders
Drivers of clutch-size in Fork-tailed Flycatchers (Tyrannus savana) at temperate and tropical latitudes in South America
It is concluded that food availability explains much of the latitudinal variation in clutch-size in this species, and there was no relationship, positive or negative, between rates of nest predation and either clutch-or brood-size, and thus no support for the nest-predation hypothesis.
Documenting Molt-Migration in Western Kingbird (Tyrannus verticalis) Using Two Measures of Collecting Effort
The high number of juvenile specimens collected on the breeding grounds in late summer confirms that the decrease in adults, measured as the percentage of all Western Kingbirds that are adults, is not an artifact of inactive collectors, and validates the use of total number of passerines as an index of the collecting effort targeting a specific passerine.
Patterns of frugivory and energetic condition in Nearctic landbirds during Autumn migration
Frugivory in Nearctic landbirds is far more extensive during migration than previously thought, and that dietary plasticity may be an adaptation to energetic demands of migratory flights.
Biogeographic, Ecological, and Evolutionary Aspects of South American Austral Migration, With Special Reference to the Family Tyrannidae.
Detailed examination of the distributions of austral migrant flycatchers revealed that each is to some extent unique, but that discernible general patterns exist, and that the same factors are probably affecting both groups, but in different ways.
The potential for comparative research across New World bird migration systems
For a migratory bird, the costs and benefits of utilizing a given migratory strategy vary according to the biotic (e.g., physiology) and abiotic (e.g., weather) constraints it experiences throughout
Migration in South America: an overview of the austral system
  • R. Chesser
  • Environmental Science, Biology
    Bird Conservation International
  • 1994
Austral migrants are species that breed in temperate areas of South America and migrate north, towards or into Amazonia, for the southern winter, and the austral system represents a third major migration system, in the sense that the term has been applied to Northern Hemisphere temperate-tropical migration.
Birds of a habitat spectrum in the Itirapina Savanna, São Paulo, Brazil (1982-2003).
  • E. Willis
  • Environmental Science
    Brazilian journal of biology = Revista brasleira de biologia
  • 2004
Some 231 birds were recorded on a sandy plateau in central Sao Paulo, in an area forming a natural "habitat spectrum", from dry or wet grasslands to bushy ones (campo-cerrado) plus gallery scrub, marshes, and low woods, which includes several rare birds.