Ptaki
Ptaki (Aves) su klasa znutřka podkmjena rjapnikow (Vertebrata).
 | |
| Baćon běły (Ciconia ciconia) | |
| systematika | |
|---|---|
| domena | Eukaryoty |
| swět | Zwěrina |
| nadkmjen: | (Deuterostomia) |
| kmjen: | (Chordata) |
| podkmjen: | (Vertebrata) |
| nadrjadownja: | (Gnathostomata) |
| rjadownja: | Ptaki |
| Podklasy | |
| |
Na swěće je wokoło 9 600 družinow ptakow.
Město prědnjeju nohow maja křidle. Ale někotre ptaki njemóžeja z křidłomaj lětać, kaž na př. štrus, emu, pinguin.
Wobrazy
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Wrobl (Passer domesticus) -
Hołb
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Ewolucija -
Sowa
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Štrus
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