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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 ...
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.
Giant sequoia. Silvics of North America (1991), [1] a forest inventory compiled and published by the United States Forest Service, includes many conifers. [a] It superseded Silvics of Forest Trees of the United States (1965), which was the first extensive American tree inventory. [3]
Bird (mathematical artwork) Bird in Hand (painting) Bird in Space; Bird on Money; Bird stone; Bird-and-flower painting; Birds in Meitei culture; The Birds of America; The Birds (painting) Black Stork in a Landscape; The Blind Girl; The Blue Bird (Metzinger) Bouquet près de la fenêtre; The Boyhood of Raleigh; Bushel with ibex motifs
Podocarpus macrophyllus is a conifer in the genus Podocarpus, family Podocarpaceae. It is the northernmost species of the genus, native to southern Japan and southern and eastern China. Common names in English include yew plum pine, [2] Buddhist pine, fern pine and Japanese yew. [3] Kusamaki (クサマキ) and inumaki (犬槇) are Japanese ...
B.C. made its newspaper debut on February 17, 1958, and was among the longest-running strips still written and drawn by its original creator when Hart died at his drawing board in Nineveh, New York, on April 7, 2007. [1] [2] Since his death, third-generation descendant Mason Mastroianni has produced the strip, with B.C. syndicated by Creators ...
The seed cones are ovoid-cylindric, 2 to 5 cm (3 ⁄ 4 to 2 in) long, with 40 to 80 seed scales; each scale bearing an exserted 4 to 8 mm (3 ⁄ 16 to 5 ⁄ 16 in) bract. The cones are green [ 5 ] to reddish purple when immature, turning brown and the scales opening flat or reflexed to release the seeds when mature, four to six months after ...