
Crab Facts: Claws, Shells & Secret Behaviors
Crabs are crustaceans found on every continent with over 7,000 species. Discover why crabs walk sideways, trade shells, and grow claws stronger than jaws.

Swans are large elegant waterfowl known for lifelong partnerships. Learn about swan species, mating behavior, habitat, migration, and diet.
Swans are large elegant waterfowl known for lifelong partnerships and graceful beauty. Seven species inhabit lakes, rivers, and coastal waters across the Northern Hemisphere and Australia.
Swans have extremely long necks with twenty two to twenty five vertebrae more than most birds. This long neck allows them to reach aquatic plants deep underwater while their bodies float on the surface. Most swan species display pure white plumage as adults.
Seven swan species exist worldwide. The mute swan native to Europe and Asia has been introduced to North America. The coscoroba swan from South America has white plumage and is the smallest swan species.
Swans form monogamous pair bonds that last for life. Couples typically form when birds reach three to four years old. Pairs perform elaborate courtship displays including synchronized swimming, head bobbing, and neck curving.
Swans build large nests from vegetation near water. Both parents gather materials including reeds, grasses, and sticks. They often ride on their parents' backs for warmth and protection during their first weeks.
Swans are primarily herbivorous eating aquatic plants, algae, and roots. They use their long necks to reach underwater vegetation that other waterfowl cannot access. Swans also graze on grass and agricultural crops near water.
Despite their large size swans are powerful fliers. They can reach flight speeds up to sixty mph. Their large wings require long runways for takeoff.
Swans appear in mythology worldwide, from Zeus's transformation in Greek myth to Celtic folklore.
English law designated mute swans as royal property in the 12th century, a tradition continuing today.
The discovery of black swans in Australia in 1697 became a famous example of overturning assumed knowledge.
Swan maidens appear in folklore across Europe, Japan, and Native American traditions.
Tchaikovsky's Swan Lake ballet made swans enduring symbols of beauty and grace in performing arts.
Research confirmed swans typically mate for life, though divorce does occasionally occur.
Studies revealed swan necks have 22 to 25 vertebrae, more than almost any bird species.
Scientists documented swans reaching flight speeds up to 60 mph despite their large size.
Research showed cygnets ride on parents' backs for protection and warmth in their first weeks.
Studies measured swan wing strikes and debunked the myth about breaking human bones.
Swan Lake became one of the most performed ballets in history, defining swan symbolism in art.
The black swan metaphor entered finance and philosophy through Nassim Nicholas Taleb's work.
Swans symbolize love, fidelity, and elegance across many cultures worldwide.
Royal swan ownership traditions continue in Britain with annual swan upping ceremonies.
Swan motifs appear frequently in jewelry, wedding imagery, and romantic symbolism.
Before European exploration, black swans were unknown to Western science, and Europeans assumed all swans were white. This universal belief persisted for thousands of years. Swans inhabited wetlands across the Northern Hemisphere with stable populations.
After black swan discovery in Australia, the term became a powerful metaphor for rare unexpected events. Conservation efforts saved trumpeter swans from near extinction in North America. Mute swan introductions to new continents raised ecological concerns. Swans now symbolize both natural beauty and the limits of assumed knowledge.
Swans have 22 to 25 neck vertebrae, more than almost any other bird species
The trumpeter swan is the largest waterfowl in North America, weighing up to 33 pounds
Swans can fly at speeds up to 60 mph once they achieve flight
Black swans were unknown to Europeans until their discovery in Australia, creating the black swan metaphor for rare events
A group of swans is called a bevy, wedge when flying, or bank when on the ground
Swans mate for life and perform synchronized courtship dances to strengthen their pair bond
Trumpeter swan conservation brought the species back from near extinction in North America
Mute swan introductions outside native range raise concerns about impacts on native species
Swans indicate wetland health and water quality in their habitats
Climate change affects migration patterns and timing of swan populations
Swan watching tourism supports conservation of wetland habitats worldwide
How much do you know? Take this quick quiz to find out!
They mate for life, mostly. Swans typically form lifelong pairs but divorce does occasionally happen.
They cannot break your arm. Powerful wings cause bruising but the bone breaking myth is exaggerated.
Necks have 25 vertebrae. More neck bones than almost any bird enables deep underwater feeding.
Cygnets ride on parents' backs. Baby swans travel safely aboard their parents for warmth and protection.
Black swans changed philosophy. Their discovery created a famous metaphor for unexpected rare events.
They fly 60 mph. Despite large size, swans are powerful fliers reaching impressive speeds.
Yes, swans typically mate for life. Pairs form when birds reach 3 to 4 years old and remain together year round. They perform synchronized courtship displays and raise young together. If one partner dies, the surviving swan may remain alone or eventually find a new mate after mourning.
This article is reviewed by the Pagefacts team.
Editorial Approach:
This article reveals the black swan discovery that changed philosophy, debunks the myth that swans can break human bones, and explains why their 25 neck vertebrae enable unique underwater feeding abilities.
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