Egg-laying and Live-bearing Although some mammals such as the platypus and spiny anteaters lay eggs, their eggs cannot be compared to a bird’s egg, made mostly of calcium and a layer of hardened mucus. Bears, on the other hand, give birth to live young. Wings and Legs Surprisingly, ...
Poultry producers and scientists have been hoping warmer weather would knock down a virulent strain of bird flu that has hammered the Midwest, but the virus recently took its biggest toll yet, hitting a farm in Iowa that held nearly 10 percent of the state's egg-laying ...
After several weeks’ successful work, I began to___that egg production was going down, I___nothing about it. Then one night, Gene told me he didn’t have___money to buy the food. He said the chickens had never___a meal and he could not figure out why some of them had stopped...