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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.
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.
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 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 ...
In its native range, the western conifer seed bug feeds on the sap of developing conifer cones throughout its life, and its sap-sucking causes the developing seeds to wither and misdevelop. It is therefore considered a minor tree pest in North America, but becoming sometimes more harmful e.g. in conifer plantations. [3]
Many species are wingless, or have reduced wings. [7] The thorax is long in the winged species, since it houses the flight muscles, and is typically much shorter in the wingless forms. Where present, the first pair of wings is narrow and cornified (hardened), while the hind wings are broad, with straight veins along their length and multiple ...
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.
This is an accepted version of this page This is the latest accepted revision, reviewed on 18 February 2025. Extinct order of birds This article is about the extinct New Zealand birds known as moa. For other uses, see Moa (disambiguation). Moa Temporal range: Miocene – Holocene, 17–0.0006 Ma PreꞒ Ꞓ O S D C P T J K Pg N North Island giant moa skeleton Scientific classification Domain ...
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