[Cygnus melanocoryphus]
Habitat: Swamps, freshwater marshes, brackish lagoons and shallow lakes
Size: 40-50"
Weight: 8-12 lbs
Wingspan: 70"
Average Lifespan: 10 years
Incubation Period: 36 days
Number of Young: 4-6 eggs in a clutch

- The black necked swan is the largest waterfowl native to South America.
- Both parents regularly carry the cygnets on their back while swimming.
- Swan eggs are the largest of any flighted bird.
- They have difficulty walking on land, since their legs are set so far back on their body.