The Celina Democrat. (Celina, O. [Ohio]) 1895-1921, 1913-10-24
Rapid Motion and Powerful
Vision Go Together.
Eagle Has Telescope Eyes-Even the
Familiar Robin and the Jay Have
Been slnsulsrly Endowed by
Nature In This Respect.

Chicago.-The eye in the bird king
dom is telescope, with the fish 1t is
microscopic, in the mole rudimentary
The eagle and the vulture have the
faculty OF adjusting the eye to dis
cern objects at a great distance. The
eagle from the far of mountain sees
the flock in the valley below and ac-
curately surveys the situation for his
descent. AS he swoops nearer and
nearer to his victim the lens in his
eye steadily readjusts itself to the de-
creasing distance and when he strikes
the lamb already chosen for his dinner
the long distance vision has narrowed
down to the scope of a few yards.
The vulture is equal to the eagle in
vision as he is in flight. Every farmer
knows If he kills a blue racer and
leaves 1t by the roadside a vulture
soaring overhead comes down and ap-
propriates It. In South America,
where the condor lives, the hunter of
wild animals dares not leave his game
long exposed and unprotected. At first
ly a dark speck appears in the upper
air and it grows larger and is soon fol-
lowed by another and another, until a
score of condors have descended to
the feast These have the telescope
eye. From the height of mile or two
these birds survey the earth beneath
and observe the movements of all
creatures below. Mankind can equal
such vision only by artificial aid,
which is an amplifcation of the pro-
cesses of nature. The eagle possessed |
a telescope before Galileo's invention.
Amy farmer boy who has ever at
tempted to come within gunshop of a
crow or hawk perched on the dry |
limb of tree can testify to the sharp |
vision of these birds at long distance.
Cookers hawk is the greatest enemy
20 the poultry yard. Soaring high in
the air, this bird Of prey sees the tiny
chicks, and he comes like a rocket to
seize the one he has chosen as a tar
get. Even the common birds about
the lawn-the robin and the jaybird-
have this same eaglelike power OF
vision modified to their requirements.
The jaybiEd will detect a very tiny
worm or insect in the grass from a dis
tance Of forty or fifty feet and will de-
scend upon the object with unerring
aim of beak. The seed eaters, meadow
larks and sparrows, need no such vi
sion, and are therefore denied its pos
session.
The eye Of the owl is especially de-
signed for short distance vision. This
bird can see imperfectly but few
yards away The eye of the owl is ar;
ranged to concentrate a great diverg-
ence of the rays of light whereby the
bird can discern near objects in a
faint light The owl can see very well
at short distance even in thick
The owls eye is somewhat
and fiat, so that much light
may enter This arrangement per
rnits too much light to enter the pupil
in the daytime, and therefore owls are
almost blind in the glare of the sun.
There is correlation between
swiftness of wing and range of vision.
ln6 Owl lb GACebuluBly 5lOW VI LuO |
of wing and range of vision
vision, while the longer sighted ami
mails are swift Of foot, Fleet animals,
such as the antelope and deer and
others living on bcundless prairies,
can see a long distance and are swift
In movement. Animals living in the
woods have no need Of such long
vision nor swift movement. Ali crea-
lures living in spacious regions and
strong light move rapidly and with
clear vision, as instance the fly catch
er, the king bird and the chimney
swift, which take their food on the
wing. The motions of these birds are
exceedingly graceful as we'll as rapid
Their vision is both telescope and mi
croscopic.
Whether birds have the power of
between different col {
ors is an open question. An old bee l
keeper holds that the bee knows one |
color from the other, and he therefore !
paints the hives in various colors as
guide to the weary, heavy laden work