Animals: Rare Egg

Last month the only female California condor in captivity, and one of the very few condors now alive anywhere, stretched her broad black wings to their loft. utmost and otherwise behaved proudly. She had laid an egg.

Dr. William M. Mann, director of National Zoological Park at Washington, was almost as proud. Long has he tried to hatch condors, the giant American vultures, in his aviary. But his only female sometimes breaks her eggs; sometimes they have been sterile.

Last week's egg, pale green and about 4 in. long, lay in a special...

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