Category:Primary projection
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English: Also primary extension, the shape of the folded wing in birds – the extra length of primary versus secondary remiges.
Media in category "Primary projection"
The following 5 files are in this category, out of 5 total.
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Flickr - Rainbirder - Willow Warbler-Chiffchaff comparison.jpg 933 × 350; 126 KB
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OxylabesMadagascariensisPZSL1870.jpg 1,330 × 1,150; 384 KB
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Phần mở rộng sơ cấp.png 1,299 × 493; 1.41 MB
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Primary projection drawing.tif 1,103 × 677; 739 KB
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Primary projection ro.jpg 1,103 × 443; 35 KB
