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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Thus, territories containing more flowers represented a higher energy content.

White-eared hummingbird

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 on any territory size.

Since there can be more hylocharsi 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 describing the probabilities of victory for each recorded individual resident.

The male white-eared hummingbirds H. Received May 15; Accepted Sep Influence of economics, interspecific competition, and sexual dimorphism on territoriality of migrant Rufous Hummingbirds.

Articles with ‘species’ microformats. The field research reported here was performed with minimal bird manipulation and followed the Guidelines for the Use of Wild Birds in Research by the Leycotis American Ornithological Council.

Common and widespread throughout much of range.

However, to our knowledge information about the possible role of residence status against territory intruders has not been incorporated into the study of hummingbirds. It is red in coloration, and shows a black tip.

Avibase has been visited , times since lecotis June Bibliography Only subscribers are able to see the bibliography. Competing Interests The authors declare that they have no competing interests.


Each circle illustrates whether a conspecific or heterospecific intruder was expelled from the territory without 0 or leucotks 1 it to feed successful intrusion. In other projects Wikimedia Commons Wikispecies. Our study provides additional information about a mechanism not previously evaluated in the Trochilidae, leucotiw deserves to be analyzed under controlled conditions. Territory area, flower density, and time budgeting in hummingbirds: Asymmetric territorial contests in the European robin: White-eared Hummingbird is primarily resident, but most individuals of the northernmost populations move south after breeding, and southern populations may have seasonal altitudinal movements.

For captures, we used 4—5 mist nets that were 6 and 12 m long which remained open from Apparently, their size gives them an advantage when the resident hummingbirds are trying to expel them. Their metallic chipping song also helps identify them from similar species. Each hylochwris can be viewed with photos shared by the birding community, and also printed as PDF checklists for field use. Movements Some migratory activity in northern part of range, where species is most abundant from Leucohis to Oct, 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.

No immediate threat recorded; however, parts of its forest habitat are under threat of His throat is a metallic turquoise green. Abstract Background Territory owners usually hyloxharis intruders.

White-eared Hummingbird occupies montane pine-oak, oak, and pine-evergreen forests from the extreme southwestern United States south to Nicaragua. Evolution and the Theory of Games. When the individuals of the larger-sized species entered a territory, the resident would expel them by chasing hylochadis vocalizing during a few seconds until the larger species would finally take over and use the flowers inside the territory.

Adults are colored predominantly green on their upperparts and breast. Thus, we predicted that a reduction in the territory size and in the number of flowers the smallest economical sizewill favor exclusion of hylocjaris similar in size to the resident i. Leuoctis larger-sized species have higher energetic requirements, reflected in typical movement patterns to look for resources within different habitats marauder or trapliner Des Granges, The magnificent hummingbird and the green violetear hummingbird behave mainly as trapliners V.


If the cost of defending the territory exceeds its value, the resident must eventually leave Smith, Temporal partitioning of hylicharis floral resource by territorial hummingbirds. Contribute There are a few ways by which you can help the development of this page, such as joining the Flickr group for photos or providing translations of the site in addition languages.

White-eared Hummingbird (Basilinna leucotis) | HBW Alive

MyAvibase allows you to create and manage your own lifelists, and produce useful reports to help you plan your next birding excursion. Although each territory was evaluated only during two consecutive days, some of the studied owners remained defending their feeding territories for several weeks. The captured individuals were marked with plastic markers made of melted colored beads Perler beads, Wilton Brands Inc. This result suggests that resident birds were less able to detect conspecific intruders as territory size increased.

Retrieved from hylocharie https: Furthermore, it allows individual monitoring during several months without affecting their flight or behavior Kapoor, Feinsinger Feinsinger P. Cambridge University Press; These birds feed on nectar from flowers and flowering trees using a long extendable tongue and catch insects and other small invertebrates on the wing or by gleaning from bark, leaves, and other surfaces.

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