Biología
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An overview of bird records committees in the Neotropics
(2018)Neotropical bird records committees have been growing in numbers, remit and prominence in recent years. This feature – by members of those committees – explains how and why committees were established and encourages birders ... -
Does the distance to forests or buildings influence great kiskadee (Pitangus sulphuratus) nesting site selection?
(2021)The expansion of human settlements has produced significant changes in natural ecosystems by fragmenting and reducing their area. Those changes influence the availability of natural and artificial sites used to build nests ... -
Nest architecture and parental care in Ruddy Treerunner Margarornis rubiginosus
(2018)We complement the only existing nest description for Ruddy Treerunner Margarornis rubiginosus and include observations of nestbuilding and breeding behaviour. We also compare our data with existing information on nest ... -
Eavesdropping avoidance and sound propagation: the acoustic structure of soft song
(2017-12)Many species use low-amplitude (soft) song during close range interactions with conspecifics, such as in aggressive encounters or courtship displays. It has been suggested that soft song is adapted to limit eavesdropping ... -
Nest design and parental care of Striped Woodhaunter Automolus subulatus
(2020)The western and trans-Andean populations of Striped Woodhaunter Automolus subulatus are sometimes considered separate species. We discuss previously published data on the nesting of Striped Woodhaunter and present novel ... -
Urbanization has opposite effects on the territory size of two passerine birds
(2020-04-28)Background: Urban expansion has been identified as one of the leading drivers of biodiversity change or loss. For birds, urbanization is specifically related to survival, breeding success, and territory size. Understanding ... -
Surviving in cities: the case of a year-round territorial bird in the Neotropics
(2022-03-18)Urban expansion has been identified as one of the main threats to biodiversity because it can negatively affect wildlife populations. However, wildlife population dynamics have not been studied in one of the most rapidly ... -
Artificial cavities and substrates for cavity-nesting birds in Neotropical urban environments: A novel resource or the last opportunity to breed?
(2021)Urban development reduces the abundance of most natural resources for some birds but also provides new opportunities for others. One group that is more likely affected by urban development is the cavity-nesting species ... -
The Nest and Eggs of the Rufous Mourner (Rhytipterna h. holerythra)
(2017-09-01)We provide the first description of nest architecture and composition, adult construction behavior, and egg characteristics for the genus Rhytipterna. We provide these data for a nest of the Rufous Mourner (Rhytipterna h. ... -
Three new bird species for Cocos Island, Costa Rica, and additional observations of other vagrants
(2019)En esta nota presentamos tres nuevos registros de especies en la isla del Coco, Costa Rica: Aguja Lomiblanca Limosa haemastica, Mosquerito de Traill Empidonax traillii / Mosquerito de Charral E. alnorum y Reinita de Costados ... -
Genetic structure in neotropical birds with different tolerance to urbanization
(2022)Gene flow in birds can be affected by urbanization depending on natural history traits and adaptability to habitat change. Contrasting results can be expected when comparing species with opposite resilience to urbanization. ... -
The role of learning, acoustic similarity and phylogenetic relatedness in the recognition of distress calls in birds
(2021-05)Many groups of vertebrates produce distress calls when attacked by predators as a last attempt to survive. However, few studies investigate whether recognition of distress calls involves learning or acoustic similarity to ... -
Range expansion and noteworthy records of Costa Rican birds (Aves)
(2018-01-19)We present new distribution information for 19 species of Costa Rican birds. Thirteen species show changes in altitudinal distribution, 9 are recorded at higher elevations such as Egretta rufescens (Gmelin, 1789), Heliomaster ... -
Megaherbivore exclusion led to more complex seagrass canopies and increased biomass and sediment Corg pools in a tropical meadow
(2022)In some regions of the Caribbean Sea, seagrasses have been negatively affected by sea turtle overgrazing. Seagrass canopy complexity has declined at a long-term monitoring site in Costa Rica. We deployed megaherbivore ... -
Description of the nest and eggs of the green thorntail (discosura conversii)
(2016-06-15)The breeding biology of the genus Discosura (Trochilidae) is poorly known. Here, we describe in detail the nest and eggs of the Green Thorntail (D. conversii). We analyze two nests; one was collected with two eggs at Limón ... -
Effect of El Niño and La Niña on abundance of frugivorous and nectarivorous terrestrial birds in three tropical forests
(2019-05-14)El Niño and La Niña climatic oscillations have dramatic effects on population dynamics and community structure of different animals. For marine birds, El Niño phenomenon drastically increases their mortality and reduces ... -
Caracterización molecular y fenotípica de la ataxia con apraxia oculomotora en Costa Rica mediante enfoques moleculares y bioinformáticos
(2022)Las ataxias son un grupo de trastornos clínicamente heterogéneos, que pueden ser heredables o no dependiendo de la etiología. Las manifestaciones clínicas de las ataxias hereditarias son una incoordinación progresiva del ... -
Patogenicidad de tres hongos asociados a la muerte de plantas de fresa (Fragaria ananassa) y descripción ultraestructural del patosistema
(2022-08-03)Introducción. El cultivo de fresa (Fragaria ananassa) es importante en Costa Rica por su alta demanda como fruta fresca y para elaboración de mermeladas. En 2015 empezaron reportes de muerte de plantas, presumiblemen ... -
Telimena (Telimenaceae, Phyllachorales) species on Neotropical host plants: New species, combinations and revision of species on Polygonaceae
(2022-05-25)In this investigation, we propose a new species in Telimena, T. bromeliae sp. nov. growing on bromeliads with a detailed description, illustrations, and molecular characterisation based on material collected in Costa Rica ...
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