Buscar
Mostrando ítems 1-10 de 68
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 ...
Relative Importance for Lincoln’s Sparrow (Melospiza lincolnii) Occupancy of Vegetation Type versus Noise Caused by Industrial Development
(2022)
Anthropogenic noise can create an acoustic environment detrimental for animals that communicate using acoustic signals. Currently, most studies of noise and wildlife come from traffic noise in cities. Less is known about ...
Geographic variation in the duets of the Rufous-naped Wren (Campylorhynchus rufinucha) complex
Variación geográfica en los duetos de la Matraca Nuquirrufa (Campylorhynchus rufinucha)
(2020)
Acoustic signals used in animal communication play a key role in mate attraction, species recognition, and territory defense. Variation in acoustic signals may reflect population structure, lack of gene flow, and phylogenetic ...
Sexual size dimorphism and acoustical features of the pre-advertisement and advertisement calls of Rhinophrynus dorsalis Duméril & Bibron, 1841 (Anura: Rhinophrynidae)
(2015)
Las interacciones entre selección natural, selección sexual, y los requerimientos ecológicos específicos de las especies son responsables de la evolución de comportamientos complejos de cortejo y estrategias reproductivas. ...
Conceptual and statistical problems with the use of the Shannon-Weiner entropy index in bioacoustic analyses
(2018-04-03)
Information theory and its indices were developed for human communication to predict the amount of information transferred in a message. One such index, the Shannon-Weiner index (SWI), has often been used to analyse ...
Frequency and synchronisation features of a highly overlapped duet changes according to the context
(2019)
Territorial defence and maintaining contact are two hypotheses of duet functions. Nevertheless, the acoustic characteristics of duets in these contexts have been poorly quantified. This work aimed to compare the spectrotemporal ...
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 ...
Description of the nest and eggs of the green thorntail (discosura conversii)
Descripción del nido y los huevos del Rabudito Verde (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 ...
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 ...
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. ...