The best way to find a
bird using the Percevia
search engine is when
you have noticed a few
of the birds field
marks. Field marks are
attributes of the bird
like color, shape,
pattern and so on.
There are two steps
required when searching
with field marks:
You pick a field mark.
You select a value for
it.
Repeat Until Bird is Found.
Our first
example. Lets say we saw
a bird in our backyard
that looked like the one
below. It was eating
at our bird feeder:
Lets
also say all we noticed
is that this bird had a
kind of crested
crown, like a spiked
hairdo, and that the color
of this crown was very
dark, maybe black.
Okay now lets see how
easy it is to find that
bird. Click the
> button to go
to the next lesson.
