Results 21 to 30 of about 2,302 (176)
European Journal of Taxonomy, 2019 Four new species of Brueelia Kéler, 1936 are described and illustrated. All of them parasitize African endemic host species in the families Passeridae, Ploceidae, and Estrildidae (Passeriformes). They are: Brueelia pofadderensis sp. nov.
Daniel R. Gustafsson +4 more
doaj +1 more source
Classification of bird species from video using appearance and motion features [PDF]
, 2018 The monitoring of bird populations can provide important information on the state of sensitive ecosystems; however, the manual collection of reliable population data is labour-intensive, time-consuming, and potentially error prone.
Atanbori +65 more
core +3 more sources
, 2007 Published as part of Turienzo, Paola & Iorio, Osvaldo Di, 2007, Insects found in birds' nests from Argentina. Part I: a bibliographical review, with taxonomical corrections, comments and a hypothetical mechanism of transmission of cimicid bugs, pp.
Turienzo, Paola, Iorio, Osvaldo Di
openaire +1 more source
The collection and database of Birds of Angola hosted at IICT (Instituto de Investigação Científica Tropical), Lisboa, Portugal [PDF]
, 2014 The bird collection of the Instituto de Investigação Cientítica Tropical (Lisbon, Portugal) holds 5598 preserved specimens (skins), mainly from Angola, Mozambique, Guinea-Bissau, São Tomé and Principe, and Cape Verde.
Bastos-Silveira, Cristiane +9 more
core +4 more sources
Frontiers in Ecology and Evolution, 2017 Ecological impacts of urbanization include the loss of biodiversity and changes in species composition and population densities. However, how the urban environment affects fundamental physiological parameters is largely unknown.
Caroline Isaksson +4 more
doaj +1 more source
Genetic and phenotypic divergence in an island bird: isolation by distance, by colonization or by adaptation? [PDF]
, 2014 Discerning the relative roles of adaptive and nonadaptive processes in generating differences among populations and species, as well as how these processes interact, is a fundamental aim in biology.
Dawson, Deborah A. +4 more
core +2 more sources
BirdsThe combined effects of plateau pikas and yak grazing on the distribution or occupancy of endemic passeridae birds on the Qinghai-Tibetan plateau, China remain largely unknown.
Baiheng An, Yun Yang, Migmar Wangdwei
doaj +1 more source
A case of leucism in House Sparrow, Passer domesticus (Linnaeus, 1758) in an island of São Francisco river, northeastern Brazil [PDF]
Biotemas, 2012 Leucism in birds is a genetic disorder characterized by the total absence of melanin in some or all feathers, but unlike albinism, the other body parts, such as eyes, beak, and tarsi remain with the typical color of the species.
Leonardo Barros Ribeiro +1 more
doaj
Sperm mtDNA Copy Number Is Not Associated With Midpiece Size Among Songbirds. [PDF]
Ecol EvolWe investigated mtDNA copy number in 19 wild passerine species representing more than a 100‐fold variation in midpiece length. Using highly accurate ddPCR quantification technology, we show that wild songbird spermatozoa have a relatively low interspecific variation of mtDNA content.
Bagdonaitė L +4 more
europepmc +2 more sources
Environmental factors influence both abundance and genetic diversity in a widespread bird species. [PDF]
, 2013 Genetic diversity is one of the key evolutionary variables that correlate with population size, being of critical importance for population viability and the persistence of species. Genetic diversity can also have important ecological consequences within
Boettcher R. +8 more
core +3 more sources