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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Probability of victory of resident male white-eared hummingbirds in relationship to the size area of the territory and the identity of the intruders. The number of flowers in each of the 20 territories was counted around the time that each owner was observed.

Hhylocharis pine forests of central and s Mexico to Guatemala Hylocharis leucotis borealis: Krebs Krebs JR.

On the contrary, the model including territory size interacting with intruder type showed strong support to explain whether a resident avoided or not successful intrusions Table 1 ; Fig. Hummingbirds Trochilidae have luecotis a model system for the study of territorial behavior because of their specialized nectarivorous habit, their small territories and their high energetic demands, in addition to the feasibility of quantifying and manipulating their food sources Dearborn, Bibliography Only subscribers are able to see the bibliography.

This prediction is supported by our leucotks because larger sized intruders heterospecifics had a lower rate of exclusion than similar sized intruders conspecifics regardless of the territory quality.

Subspecies and Distribution B. The effects of residency and body size peucotis contest initiation and outcome in the territorial dragon, Ctenophorus decresii. 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. For captures, we used 4—5 mist nets that were 6 and 12 m long which remained open from Results In general, small and low quality territory owners tend to prevent conspecific intruders from foraging at a higher rate, while they frequently fail to exclude heterospecific intruders such as the magnificent hummingbird Eugenes fulgens or the green violetear hummingbird Colibri thalassinus hyllcharis any territory size.


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. Interspecific territoriality by a rufous-tailed hummingbird Amazilia tzacatl: The importance of valuing resources: White-eared Hummingbird Hylocharis leucotis Vieillot, Twenty white-eared male adult hummingbird territories were monitored during a winter season, recording the territorial behavior of the resident against intruding hummingbirds.

Related taxa Other related concepts Hylocharis leucotis x Selasphorus platycercus hybrid Other synonyms Catalan: Camfield Camfield AF. In this study, we investigated the effect of territory residence in contest asymmetries in natural conditions using the white-eared hummingbird Hylocharis leucotis as a model.

Evolution of fighting behavior: Differences in the success rate of defense against intruders of different body sizes can be explained by 1 the size asymmetries among contenders and 2 detectability of intruders in relation to the size of the territory.

White-eared hummingbird

None of the resident hummingbirds followed during the study were expelled from the defended territory. Resource value affects territorial defense by Broad-tailed and Rufous hummingbirds.


The observation period was eight hours for each territory. Asymmetries vary depending on age, sex, and mating system of the different bird species. The most prominent feature is the white eyestripe found in both males and females. Lecuotis tail is bronze green and straight.

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Retrieved from ” https: Residents were more likely to chase conspecific than heterospecific intruders. Hylocuaris Ewald PW.

Hylocharis leucotis (White-eared Hummingbird) – Avibase

Sandlin Sandlin EA. Nevertheless, the resident-intruder asymmetries during the course of a day depended on different factors, such as the size and quality of the territory and, mainly, the identity of the intruders.

Search Avibase search Browse by families. Because resident hummingbirds always returned to their perches and foraged inside their territory, If intruding hummingbirds foraged inside the territory i. Translate Avibase is also available in the following languages: International Union for Conservation of Nature. 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.

Our results showed that the identity of the intruder and the size and quality of the territory determined the result of the contests, but not the intensity of defense.