Silk’s superpowers
Middle school science adventures
Microbes at the Gas Pump
Salamanders and Newts
Koalas, Up Close and Personal
No Fair: Monkey Sees, Doesn't
Red Apes in Danger
Newly named fish crawls and hops
Seeing red means danger ahead
Supersonic Splash
Backyard Birds
Chemistry and Materials
Earth from the inside out
Earth-Friendly Fabrics
Butterfly Wings and Waterproof Coats
The hungry blob at the edge of the universe
Batteries built by Viruses
Games with a Purpose
Dinosaurs and Fossils
Meet the new dinos
Tiny Pterodactyl
Fossil Fly from Antarctica
E Learning Jamaica
2014 GSAT Results for Jamaican Kids
Results of GSAT are in schools this week
E Learning in Jamaica WIN PRIZES and try our Fun Animated Games
Slower Growth, Greater Warmth
Petrified Lightning
Vitamin D-licious Mushrooms
Snow Traps
A Change in Leaf Color
Sea Otters, Kelp, and Killer Whales
Finding the Past
Traces of Ancient Campfires
A Big Discovery about Little People
An Ancient Childhood
Pygmy Sharks
Food and Nutrition
Building a Food Pyramid
Chew for Health
Allergies: From Bee Stings to Peanuts
GSAT English Rules
Whoever vs. Whomever
Adjectives and Adverbs
Order of Adjectives
GSAT Exam Preparation Jamaica
GSAT Practice Papers | GSAT Mathematics | Maths
Tarrant High overcoming the odds
2014 GSAT Results for Jamaican Kids
GSAT Exams Jamaica Scholarships
2014 GSAT Results for Jamaican Kids
GSAT Scholarship
GSAT Practice Papers | GSAT Mathematics | Maths
GSAT Mathematics
E Learning in Jamaica WIN PRIZES and try our Fun Animated Games
How to Slice a Cake Fairly
Secrets of an Ancient Computer
Human Body
Flu Patrol
Opening a Channel for Tasting Salt
What the appendix is good for
Aquatic Animals
Choosing a Preschool: What to Consider
How children learn
Children and Media
Project Music
Hold on to your stars, ladies and gentlemen
The Particle Zoo
Making the most of a meal
Nature's Alphabet
Fast-flying fungal spores
Gila Monsters
Sea Turtles
Space and Astronomy
Planets on the Edge
Witnessing a Rare Venus Eclipse
Cool as a Jupiter
Technology and Engineering
Weaving with Light
Algae Motors
Riding Sunlight
The Parts of Speech
What is a Preposition?
Adjectives and Adverbs
Countable and Uncountable Nouns
Are Propellers Fin-ished?
Troubles with Hubble
Charged cars that would charge
A Change in Climate
Arctic Melt
The Best Defense Is a Good Snow Fence
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Birds are excellent adapters, evolving both physically and behaviorally to exist in a variety of different environments. While you may think of birds as being creatures of the air, waterfowl are an example of birds adapting and thriving in environments in which we may not expect to see them. Unlike perching birds and birds of prey, waterfowl have webbed feet adapted to paddling in the water, and secrete a special oil that, when groomed into their feathers, helps keep them dry. Their diet, too, is suited to a semi-acquatic life, and while some feed on the plants that grow around water, others are skillful at diving and fishing. Anatidae is the biological family that includes the ducks and most duck-like waterfowl, such as geese and swans. These are birds that are modified for swimming, floating on the water surface, and in some cases diving in at least shallow water. They have webbed feet and bills which are flattened to a greater or lesser extent. Their feathers are excellent at shedding water due to special oils. Anatidae are remarkable for being one of the few families of birds that possess a penis; they are adapted for copulation on the water only and care must be taken when breeding ducks or geese that a pool is provided for this purpose as attempts to copulate on dry land will often lead to injury of the drake's penis. Duck, eider and goose feathers and down have long been popular for bedspreads, pillows, sleeping bags and coats. The members of this family also have long been used for food. While the status of the Anatidae as a family is straightforward, and there is little debate about which species properly belong to it, the relationships of the different tribes and subfamilies within it are poorly understood. The listing in the box at right should be regarded simply one of several possible ways of organising the many species within the Anatidae.


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