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Other sensors, such as for recording temperature, or whether the logger is wet or dry, may be used in conjunction with the light-level logging in order to provide further ecological information. The devices may be attached to the bird being tracked by a harness, or to the band on the bird's leg. The weights of geolocators range from 0.3g ...
The black-crowned tityra (Tityra inquisitor) is a medium-sized passerine bird. It has traditionally been placed in the cotinga or the tyrant flycatcher family, but evidence strongly suggest it is better placed in Tityridae .
Deep cup nest of the great reed-warbler. A bird nest is the spot in which a bird lays and incubates its eggs and raises its young. Although the term popularly refers to a specific structure made by the bird itself—such as the grassy cup nest of the American robin or Eurasian blackbird, or the elaborately woven hanging nest of the Montezuma oropendola or the village weaver—that is too ...
Birds fly into the net, becoming entangled, and are extracted by researchers. Birds can then be identified, measured, weighed, and marked with a small aluminum band bearing a unique number. The number is reported to a central database so that information about the bird can be updated if the bird is ever recaptured somewhere else.
BirdTrack allows birdwatchers to record the names and numbers of birds seen in a specified location anywhere in the world. [5] It acts as a log for those wishing to maintain lists of their own sightings, [ 3 ] [ 2 ] but also feeds data into various scientific surveys, [ 2 ] is used for research and conservation purposes, [ 3 ] and generates ...
A category for birds which nest underground. Subcategories. This category has only the following subcategory. C. Cave birds ...
These birds mainly eat terrestrial arthropods and snails, and also include fruit [23] in their diet during winter. [2] The nest, referred to as the "oven" (which gives the bird its name), is a domed structure placed on the ground, woven from vegetation, and containing a side entrance. The female usually lays 4–5 eggs speckled with brown or gray.
Birds have iron-containing materials in their upper beaks. There is some evidence that this provides a magnetic sense, mediated by the trigeminal nerve , but the mechanism is unknown. Cartilaginous fish including sharks and stingrays can detect small variations in electric potential with their electroreceptive organs, the ampullae of Lorenzini .