White-eared Hummingbird cm; male c. 3·6 g, female c. 3·2 g. Male has straight bill, red, tipped black; forehead glittering violet, white. Hylocharis leucotis leucotis: Highland pine forests of central and s Mexico to Guatemala White-eared Hummingbird (Hylocharis leucotis) [version 1] American. Click here for more information about the Red List categories and criteria. Justification of Red List category. This species has a very large range, and hence does.
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The raw data has been supplied as Supplemental Dataset Files. Even though residents tended to show agonistic behaviors such as the chasing regardless of the type and size of the intruder and the quality of the defended territory, their tolerance for allowing the use of the defended flowers was differential. Habitat preference increases territorial defence in brown trout Salmo trutta Behavioral Ecology and Sociobiology. Open in hylicharis separate window.
Hylocharis leucotis (White-eared Hummingbird) – Avibase
Dearborn Dearborn DC. Influence of economics, interspecific competition, and sexual dimorphism on territoriality of migrant Rufous Hummingbirds. The male white-eared hummingbirds H. National Center for Biotechnology InformationU.
Camfield Camfield AF.
Author information Article notes Copyright and License information Disclaimer. The magnificent hummingbird and the green violetear hummingbird leucltis mainly as trapliners V. Received May 15; Accepted Sep Residential quarter with sparse vegetation and gardens potential natural vegetation: Overall, the residents have a higher probability of victory avoiding intruder use of their nectar resources against conspecific intruders in territories of smaller size and lower quality, while in the interspecific interactions, their probability of victory was less in all cases.
Data analysis Since there can be more than one predictor affecting the probability that a resident wins contests against the intruders, we generated various generalized models logistic models involving a logit link and binomial error distribution hylocharid the probabilities of victory for each recorded individual resident. None of the resident hummingbirds lejcotis during the study were expelled from the defended territory. Territory area, flower density, and time budgeting in hummingbirds: This marking technique is not harmful to hummingbirds and is known to be an efficient alternative for the visual identification of individuals in the field.
The size and quality of the territory were related to the probability that the resident would allow the use of flowers by the intruder. On the other hand, the assessment of uncorrelated asymmetries in the strict sense is poorly understood in this bird group. There are more than 12, regional checklists in Avibase, offered in 9 different taxonomies, including synonyms more than languages. Additional Information and Declarations Competing Interests The authors declare that they have no competing interests.
Click here for additional data file. A montane hummingbird territorial system in Oaxaca, Mexico. Highland pine forests of central and s Mexico to Guatemala Hylocharis leucotis borealis: Resident status in a territory was considered if the resident hummingbird foraged inside of it, and defended it against intruders for several consecutive days, without spending time away from it even after chases. White-eared Hummingbird Hylocharis leucotisversion 1.
White-eared Hummingbird (Basilinna leucotis) | HBW Alive
Hylocnaris Citation Arizmendi, M. White-eared Hummingbird nests are frequently placed in close proximity to one another and sometimes are even built on top of old nests. In further studies, it is necessary to consider the relationship between all of the asymmetries in order to understand under what circumstances territorial dominance occurs.
Our results hlyocharis that flexibility observed in contest tactics suggests that these tactics are not fixed but are socially plastic instead and they can be adjusted to specific circumstances.
Show Details Hide Details. However, residents of large territories with a high number of open flowers will tend to invest more by chasing and avoiding successful intrusions in order to exclude larger body size intruders i.
Conversely, at the intra-specific level conspecificswithin the same sex, body size can be a very important factor in the result of territorial fights Carpenter et al. Both males and females have a dark cheek bordered by a long white stripe behind the eye, and both have some extent hypocharis red on the bill.
Their metallic chipping song also helps identify them from similar species. Under these alternative scenarios, residents seem likely to invest more resources defending a high-quality territory. Interestingly, the outcome of disputes among yylocharis sized contenders would vary as the territory size increased.
The white-eared hummingbird Basilinna leucotis is a small hummingbird. However, the smallest ones were more likely to be excluded from smaller rather than from larger territories.
Each circle illustrates whether a conspecific or heterospecific intruder was expelled from the territory without 0 or allowing 1 it to feed successful intrusion. Asymmetric territorial contests in the European robin: Aggression, body condition, and seasonal changes in sex-steroids in four hummingbird species.
Thus, this variable was used to determine whether the resident status was affected by the quality of the defended patch.