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Revision as of 16:16, 24 March 2025
Уровень сложности
1
Рік
1976
Version
06.11.2025
Орган затвердження
Північноамериканський Дивізіон
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4a
4b
4c
4d
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5a
5b
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Dog vs Cat Tracks
Unlike dogs, cats can retract their claws, and they do so when walking. Therefore, you should expect to find claw marks present in dog tracks, but absent in cat tracks. In general dogs tracks are larger than cat tracks, but you cannot rely on this alone, as there are some very small dogs and some very large cats.
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Some species of mammal and some species of insect leave scent trails to communicate with others of their species. Canines, cats, deer, moose, alpaca and llama, and others will mark their territory with urine.
Ants lay down pheromone trails that lead to food sources. If you have ever seen a column of ants scurrying about in single file, you can be sure they are following a scent trail.
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9a
Most perching birds (passerines) hop, though many can both hop and walk (such as ravens, blackbirds, and robins). Jays, sparrows, cardinals, titmice, nuthatches, finches, and many others hop. The tracks of hopping birds often print side-by-side as they tend to keep their feet together as they hop.
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Walking birds include crows, most waterfowl and shore birds (sandpipers, egrets, herons, etc.), and most game birds (wild turkeys, geese, ducks, grouse, doves, pigeons, etc.). The tracks of walking birds typically alternate left to right as they lift their feet one at a time.
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- Feathers
- Droppings
- Nests
- Birdsongs (if you can hear them, they must be present!)
- Eggs or eggshells
- Pellets: Birds of prey regurgitate the indigestible portions of their meals. Birds have no teeth so they rip their prey apart with their beaks and swallow large chunks at a time. Then they digest the soft portions (such as meat) leaving the hair and bones behind to collect into pellets. They cough up these pellets which can be found by the astute observer.
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Canadian geese can be identified from a great distance by their distinctive V formation.
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12a
- b. Змея
- c. Черепаха
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