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Nest Usurping Occurrence Of The Piratic Flycatcher (Legatus Leucophaius) In Southwestern Costa Rica
(2009)
El Mosquerito Pirata (Legatus leucophaius) roba nidos colgantes o en forma de domo hechos principalmente por tiranidos o icteridos, sin embargo la frecuencia con la cual este mosquero se roba los nidos de otras especies ...
Relationship between species richness of excavator birds and cavity–adopters in seven tropical forests in costa rica
(2009)
The abundance of wood cavities is thought to be a limiting factor for bird species that depend on these cavities for nesting. Thus, it is expected that number of cavity adopters correlates with number of cavity excavators ...
Anolis insignis (Decorated anole). Predation attempt
(2019)
Two jays attacking an A. insignis on a liana 10 m above the ground.
Species richness and density of seabirds in Isla del Coco bays, Costa Rica, related to the occurrence of breeding colonies
(2016-10-15)
Isla del Coco is one of the five oceanic islands situated on the eastern tropical Pacific Ocean and represents an important nesting and roosting site for seabirds. Despite several factors that can potentially impact its ...
Changes in escape behaviour of black iguanas (Ctenosaura similis) over an anthropogenic disturbance gradient
(2021)
Studies on the impact of human activity on animal behaviour are critical for understanding the extent to which humans affect ecological dynamics. Previous studies have found that human presence alters antipredator behaviours, ...
Human waste used as nesting material affects nest cooling in the clay-colored thrush
(2021-09-01)
The internal temperature of nests largely depends on the materials used in their construction because the characteristics of each material affect the isolation of nest walls. In urban environments, the availability of
natural ...
Híbridos silvestres de patos (Anseriformes: Anatidae) registrados en Costa Rica
(2016-09)
Informamos la existencia de tres híbridos silvestres de patos en Costa Rica, basados en observaciones esporádicas en el país. Adicionalmente, proveemos una explicación de cuáles, serían las especies que dieron origen a ...
A test of the Acoustic Adaptation Hypothesis in three types of tropical forest: degradation of male and female Rufous-and-white Wren songs
(2016)
Many animals produce complex vocalizations that show pronounced variation between populations. The Acoustic Adaptation Hypothesis helps to explain this variation, suggesting that acoustic signals are optimized for transmission ...
Uso de material artificial para la construcción de nidos de aves: potenciales consecuencias sobre el éxito reproductivo de Turdus grayi (Passeriformes: Turdidae)
(2020-07-29)
El exponencial aumento en la población humana ha generado una rápida expansión de las
zonas urbanas. El aumento en el área de las ciudades produce que algunas especies entren en
contacto directo con nuevos recursos ...
Observations at a Yellow-eared Toucanet (Selenidera spectabilis) nest
Descripción de la arquitectura del nido del Tucancillo Orejiamarillo (Selenidera spectabilis)
(2018)
What little we know of the breeding biology of Selenidera toucanets comes from only two of the eight species. For most species the breeding season is approximated through indirect evidence (e.g., gonad size in collected ...