Results 21 to 30 of about 1,461 (199)

Consistency and flexibility in solving spatial tasks: different horses show different cognitive styles [PDF]

open access: yes, 2017
Individual animals vary in their behaviour and reactions to novel situations. These differences may extend to differences in cognition among individuals.
A Bisazza   +59 more
core   +4 more sources

Genetic variability in three Amazon parrot species

open access: yesBrazilian Journal of Biology
Parrots of the genus Amazona are among the most threatened species of the Order Pscittaciformes. This work describes allozyme polymorphisms in three Amazon parrot species - the Blue-fronted Amazon (Amazona aestiva), the Orange-winged Amazon (Amazona ...
IF. Lopes, MA. Del Lama, SN. Del Lama
doaj   +1 more source

Exotic parrots breeding in urban tree cavities: nesting requirements, geographic distribution, and potential impacts on cavity nesting birds in southeast Florida

open access: yesAvian Research, 2019
Background Exotic parrots have established breeding populations in southeast Florida, including several species that nest in tree cavities. We aimed to determine the species identity, nest site requirements, relative nest abundance, geographic ...
Joshua M. Diamond, Michael S. Ross
doaj   +1 more source

Diagnosis of Illegal Trafficking Wildlife in Jurisdiction of Corporación Autónoma Regional de Cundinamarca – CAR, Cundinamarca and Boyacá, Colombia. [PDF]

open access: yes, 2016
El tráfico ilegal de fauna silvestre constituye una amenaza a la biodiversidad. Se observan diferentes usos de este recurso, los cuales varían de acuerdo a la región.
Suarez Giorgi, Carlos Andres
core  

Habitat characterization and modeling of the potential distribution of the Military Macaw (Ara militaris) in Mexico [PDF]

open access: yes, 2008
Forest structure and composition have been used to assess the habitat characteristics that determine bird distributions. The patterns of distribution have been shaped by historical and ecological factors that play different roles at both temporal and ...
Anderson   +99 more
core   +1 more source

Fine‐scale patterns of genetic structure in three species of forest birds reveal dynamic Pleistocene history within an Amazonian interfluve

open access: yesIbis, EarlyView.
Phylogeographical studies of Amazonian birds have revealed large intraspecific diversity, even within recognized areas of endemism. To understand the origin and organization of Amazonian diversity, including the influence of current and historical landscapes, we need to evaluate fine‐scale patterns of genetic diversity in relation to detailed ...
Affonso Henrique Nascimento de Souza   +4 more
wiley   +1 more source

Handbuch der Oologie. [PDF]

open access: yes
v.1:Lf.13(p.769 ...
Meise, W.   +1 more
core   +2 more sources

Stomach contents of Brazilian non-passerine birds [PDF]

open access: yes, 2013
We report on the stomach contents of 70 individuals belonging to 36 species and 12 families of non-passerine birds of the Ornithological Collection Marcelo Bagno, University of Brasilia, Brazil.
Ballarini, Yara   +2 more
core  

The fish fauna of the Iwokrama Forest [PDF]

open access: yes, 2005
Fishes were collected from the rivers in and around the Iwokrama Forest during January-February and November-December 1997. Four hundred species of fish were recorded from forty families in ten orders.
Arjoon, D   +5 more
core   +1 more source

Dispersal and delimitation: Phylogenomics of Connaraceae prompts revised generic delimitation in Cnestideae and reveals global biogeographic patterns

open access: yesTAXON, Volume 75, Issue 2, April 2026.
Abstract The tempo and mode of assembly of the world's most diverse, tropical floras remain poorly known. Evolutionary relationships within pantropical plant clades such as Connaraceae (Oxalidales, ca. 220 species) offer an opportunity to address this issue.
Serafin J.R. Streiff, Jurriaan M. de Vos
wiley   +1 more source

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