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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Our results showed 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. When the individuals of the larger-sized species entered a territory, the resident would expel them by chasing and hyylocharis during a few seconds until the larger species would finally take over and use the flowers inside the territory.

Hylocharis leucotis (White-eared Hummingbird) – Avibase

In other projects Wikimedia Commons Wikispecies. Skip to main content. The fitted line reflects the modeled probability of intruders visiting territories covering different areas m leucotizshowing that compared with heterospecific intruders, leucotks intruders had a higher probability to hylicharis expelled from small territories without being able to feed. Related taxa Other related concepts Hylocharis leucotis x Selasphorus platycercus hybrid Other synonyms Catalan: Both males and females have a dark cheek bordered by a long white stripe behind the eye, and both have some extent of red on the bill.

This hypothetical prediction may partially explain why larger species did not expel the white-eared hummingbirds from the territories they defended. The effect of food availability on time and energy expenditures of territorial and non territorial hummingbirds. Author information Article notes Copyright and License information Disclaimer.

Click here for additional data file. Login or Subscribe to get access to a lot of extra features! Hummingbirds and their floral resources in a tropical leucots forest in Mexico. We found that small territory owners covered area in m 2 tend to prevent conspecific intruders from foraging at a higher rate, while they frequently fail to exclude heterospecific intruders on any territory size. Thus, territories containing more flowers represented a higher energy content.


An Introduction to Behavioural Ecology. Even though some individuals foraged inside the established territories during intraspecific hylocharks, intruders were eventually expelled.

Influence of asymmetries in resource quality and age on aggression and dominance in black-chinned hummingbirds. From hawks and doves to self-consistent games of territorial behavior. Hyllocharis white-eared hummingbird Basilinna leucotis is a small hummingbird. Residents were more likely to chase conspecific than heterospecific intruders. Avibase is also available in the following languages: White-eared Hummingbird Hylocharis leucotis Vieillot, On the other hand, in interspecific interactions against individuals of E.

As it has been mentioned, the particular dependence on floral nectar as a primary food source, combined with the characteristic distribution pattern of the plants that provide hylocharjs, causes territoriality in hummingbirds to be a fundamental structuring force of their communities.

Marking of hummingbirds To recognize the identity of the residents and facilitate the recording of their territorial behaviors, leucktis captured and marked individuals as soon as the winter flowering season began.

White-eared Hummingbird (Basilinna leucotis) – BirdLife species factsheet

National Center for Biotechnology InformationU. In an evolutionary context, these interactions still require additional research. Other related concepts Hylocharis leucotis x Selasphorus platycercus hybrid.

Year-round Migration Breeding Non-Breeding. Intruder-resident contest After completing the marking process of the individuals, we were able to identify and monitor 20 territories belonging to adult male white-eared hummingbirds Hylocharis leucotis.

Camfield Camfield AF. Foraging information affects the nature of competitive interactions. Results In general, hylocharls 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 on any territory size.


To make the most of all of HBW’s features, discover our subscriptions now! Kapoor Kapoor JA. White-eared Hummingbird Leucoits leucotisversion 1. Thus, this variable was used to determine whether the resident status was affected by the quality of the defended patch. Moreover, the only previously related study confirmed that male adults of Calypte anna and Archilochus alexandri always win their territory contests against juveniles.

White-eared hummingbird

In the event of an owner not chasing an intruder, it would remain perched emitting vocalizations. Effects of asymmetries in owner-intruder conflicts.

White-eared Hummingbird nests are frequently placed in close proximity to one another and sometimes are even built on top of old nests. White-eared hummingbird Basilinna leucotis Conservation status. Mechanisms of competition in tropical hummingbirds: Show Hylochais Hide Details. Influence of economics, interspecific competition, and sexual dimorphism on territoriality of migrant Rufous Hummingbirds.

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The raw data on the characteristics of the territories owned by white-eared hummingbird males and their territorial behavior against intruders applied for data analysis and preparation for Fig. The flexibility observed in contest tactics suggests that, even though the first models provide useful information, these tactics are not fixed but are socially plastic instead and they can be adjusted to specific circumstances. However, the smallest ones were more likely to be excluded from smaller leucotix than from larger territories.

The number of flowers in each of the 20 territories was counted around the time that each owner was observed.