| molecular taxonomy of brazilian tyrant-flycatchers (passeriformes: tyrannidae). | the tyrannids are one of the most diverse groups of birds in the world, and the most numerous suboscine family in the neotropics. reflecting such diversity, many taxonomic issues arise in this group, mainly due to morphological similarities, even among phylogenetically distant species. other issues appear at higher taxonomic levels, mostly brought up by genetic studies, making systematics a rather inconclusive issue. this study looks into the use of dna barcodes method to discriminate and identi ... | 2008 | 21586004 |
| nomenclatural corrections, neotype designation and new subspecies description in the genus suiriri (aves: passeriformes: tyrannidae). | zimmer et al. (2001) documented two morphological and vocal forms within what was then known as suiriri suiriri affinis, and described the short-billed form as suiriri islerorum. however, studies of the burmeister type material held at the natural history collections of the martin-luther-university halle-wittenberg, germany, revealed the types of suiriri s. affinis (burmeister, 1856) to be the same taxon as suiriri islerorum, which name therefore becomes a junior synonym. no published name is av ... | 2014 | 24872051 |
| bird mixed-flocks and nuclear species in a tecoma savanna in the pantanal. | in bird mixed flocks, a prominent species, the so-called nuclear species, improves the cohesion and maintenance of the flocks, while other less conspicuous species are assumed as satellite. in this study we described the composition, as well as examined the existence of both nuclear and satellite species in mixed flocks of a savanna in the pantanal. the observations were developed using three transects during the dry season of 2002. bird species abundance and respective rate of participation in ... | 2008 | 18833471 |