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A conifer cone, or in formal botanical usage a strobilus, pl.: strobili, is a seed-bearing organ on gymnosperm plants, especially in conifers and cycads. They are usually woody and variously conic, cylindrical, ovoid, to globular, and have scales and bracts arranged around a central axis, but can be fleshy and berry-like.
Bird ringing is the term used in the UK and in some other parts of Europe, while the term bird banding is more often used in the U.S. and Australia. [49] bird strike The impact of a bird or birds with an airplane in flight. [50] body down The layer of small, fluffy down feathers that lie underneath the outer contour feathers on a bird's body. [51]
Podocarpus (/ ˌ p oʊ d ə ˈ k ɑːr p ə s / [2]) is a genus of conifers, the most numerous and widely distributed of the podocarp family, the Podocarpaceae. Podocarpus species are evergreen shrubs or trees, usually from 1 to 25 m (3 to 82 ft) tall, known to reach 40 m (130 ft) at times.
The red crossbill is in the midst of an adaptive radiation into the niches presented by the various species of conifer. [12] There are about 10 North American and 18 Eurasian types so far identified, [13] with many known to affiliate with a particular conifer species or a suite of similar conifer species. While each type may be seen to feed on ...
Crossbills are specialist feeders on conifer cones, and the unusual bill shape is an adaptation which enables them to extract seeds from cones. These birds are typically found in higher northern hemisphere latitudes, where their food sources grow. They irrupt out of the breeding range when the cone crop fails. Crossbills breed very early in the ...
The common sounds the male bird makes towards a female is "woikawoikawoika", symbolizing their relationship to one another and other birds. If the call is used towards a male, it is a territorial sign. [23] The calls' pattern can be classified as flat and gradually rises into a loud noise. The call type is a chirp that drums and rattles. [26]
Nightjars are medium-sized nocturnal or crepuscular birds in the family Caprimulgidae / ˌ k æ p r ɪ ˈ m ʌ l dʒ ɪ d iː / and order Caprimulgiformes, characterised by long wings, short legs, and very short bills. They are sometimes called bugeaters, [1] their primary source of food being insects. Some New World species are called nighthawks.
Males and young birds also have red markings on the neck or head. This species is found across the Palearctic including parts of North Africa. Across most of its range it is resident , but in the north some will migrate if the conifer cone crop fails.