Yellow Edge Modes
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Yellow Edge Modes |
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| Systematics | ||||||||||
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| Todus mexicanus | ||||||||||
| Lesson , 1838 |
The yellow flankedodi ( Todus mexicanus ), also called Portoricotodi , is a species of the Todis family that is only 11 centimeters tall .
Appearance
These birds have green plumage that covers their entire back, wings, tail and head. The beak is metallic black above and below and yellow on the sides. The throat is provided with a noticeable red spot. The chest is white, the belly is olive in color. The undersides of the wings, the underside of the tail and the legs are black. The wings have thin, elongated black stripes on the top.
Distribution and way of life
Yellow flanked deaths occur only on the island of Puerto Rico , where they inhabit the rainforests and the bush savannah.
The birds sometimes produce a rattling sound with their flight feathers. In addition, yellow flank todis emit a shrill Tscherek tone. They are ambulance hunters who catch insects on the fly or from protruding branches.
Territoriality
The territories are comparatively small and are defended by both sexes all year round. Home areas are larger than breeding areas, which are centered around nest building. If there are no neighboring todies nearby, couples also look for food outside of the breeding area. The size of the areas depends on the environment. So the territories in flat and open forest areas and areas with canyons and boulders are largest. They avoid areas with large rocky rivers, presumably due to the lack of nesting banks. For example, territories in El Verde are between 6,000 and 12,000 square meters and near Mount Britton between 15,000 and 40,000 square meters.
Reproduction
During a period of eight weeks, the male and female animals dig a 25 to 35 cm long narrow burrow into the ground with an enlarged breeding chamber at the end. The entrance to the cave is circular and an average of 3.4 cm wide and 3.6 cm high.
The females lay their eggs 3 to 4 weeks after the nest is completed. It lays 1 to 4 light white eggs (an average of 2.3 eggs) on consecutive nights. The typical volume of the egg for most bird species is 2–11% of the body mass, in the case of yellow flank death the egg makes up approx. 26% of the body mass of the female. The responsibility for incubating the eggs is shared between the male and female for an average of 21 days. In general, each adult todi spends less than 25% of their time incubating.
The nestling period is usually 19 to 20 days, depending on the number of chicks, the attention of parents and the presence of helpers.
Hazards and protective measures
Because of its widespread distribution and because no endangerments are known for this species, the IUCN classifies this species as “ Least Concern (LC) ” = “not endangered”.
literature
- Goetz Rheinwald (ed.), Cyril Walker: Atlas of the bird world. Unipart, Remseck near Stuttgart 1994, ISBN 978-3-8122-3399-6 , p. 99.
- Wilhelm owner (ed.), Erna Mohr: Encyclopedia of the animals. Volume 2, Weltbild, Augsburg 1991, ISBN 978-3-89350-361-2 , p. 343.
- Joseph Michael Forshaw (ed.), David Kirshner: Encyclopedia of the Wildlife: Birds. Translated from the English by Derek Vinyard. Orbis, Hamburg 2003, ISBN 978-3-572-01378-4 , p. 143.
- Christopher M. Perrins (Ed.): The FSVO encyclopedia birds of the world. Translated from the English by Einhard Bezzel. BLV, Munich / Vienna / Zurich 2004, ISBN 978-3-405-16682-3 , p. 373 (title of the original English edition: The New Encyclopedia Of Birds. Oxford University Press, Oxford 2003).
Web links
- Todus mexicanus inthe IUCN 2016 Red List of Threatened Species . 3. Listed by: BirdLife International, 2016. Retrieved April 22, 2017.
Individual evidence
- ↑ a b c d Aleshia Fremgen: Puerto Rican Tody (Todus mexicanus) . Cornell Lab of Ornithology. 2013.