Presentazione di PowerPoint

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How can you determine a birds sex? Until now I
was never able to determine which was the male
and which the female.
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I always thought that it had to be determined
surgically, while ornitoligsts spoke about the
feathers, the size, the beak and other equally
idiotic ways that required hours upon hours of
observing them in their natural habitat and so
on. Until now Of two birds, which is the
female? In the next page youll see two birds.
Study them carefully. Have a look and see if you
can determine which of the two is the female. It
can be done. Even by people with limited
experience in birdwatching
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Now, send this to all the men you know. And to
all the women that have a great sense of humour