Duckling Survival
A variety of factors influence how many young ducks fly south each fall.

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Waterfowl Mating Systems II
How ducks and geese select their mates and maintain pair bonds varies among species.

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Waterfowl Sex Ratios
A variety of factors influence the proportion of males and females in waterfowl populations.

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Diving Ducks: Into the Deep
Diving ducks are perfectly designed for feeding in deep-water habitats.

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Life in the Egg
A look at the incubation process of the egg

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Nest Site Selection
Where ducks make their nests is vital to the birds' breeding success

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Waterfowl Energy Demands

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Nature or Nurture
Both instinct and learning play important roles in shaping waterfowl behavior

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Stay Off My Pond

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Flying Machines

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Webbed Wonders

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Birds of a Feather

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Waterfowl CSI
Isotope analysis is helping researchers solve waterfowl mysteries

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Getting Ready for the Migration
After the breeding season, ducks must molt and must build energy reserves in time for fall migration

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The Incubation Period
For female waterfowl, hatching a nest requires a big investment of time and energy

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The Salt Marsh Sovereig
Food and habitat resources needed for wintering black ducks

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Wings in Action

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Waterfowl Hybrids
Crossbreeding produces rare and interesting birds but also threatens the survival of some species

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Dressed for Success
A drake’s bright colors and a hen’s dull plumage both play crucial roles in breeding

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Extrapair Paternity
Many waterfowl broods include offspring from more than one male

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