Delaware City press. (Delaware City, Del.) 1913-19??, 1913-10-17
Rapid Motion and Powerful
Vision Go Together.
Eagle Has Telescope Eyes-Even the
Familiar Robin and the Jay Have
Been slneuIarly 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'
rhe eagle and the vulture have the
faculty of adjusting the eye to dis
Germ objects at great distance. The
eagle from the far off mountain sees
the flock in the valley below and ac-
:urately surveys the situation for his
descent AS he swoops nearer ana
nearer to his victim the lens in his
aye steadily readjusts itself to the de-
,reasing 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 Yulture is equal to the eagle in |
vision as he is in flight. Every farmer
Knows IL he kills a blue racer and
leaves 1t by the roadside a yulture
soaring overhead comes down and APP
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
uot condor can be seen, but pFsSent-
YES, dark sspsqas eppaaFs in tho per-
air and it grows larger and is soon fol-
| lowed by another and another, until
score of condors have descended to
the feast. These have the telescope
sye. 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 application of the pro-
cesses of nature. The eagle possessed
a telescope before Galileo's invention.
Any 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
to the poultry yard. Soaring high in
the air, this bird of prey sees the tiny
chicks, and he comes like rocket to
seize the one he has chosen as tar
get. Even the common birds about
the lawn-the robin and the 1aybird-
have this same eagielike power OF
vision modified to their requirements.
The jayblrd will detect very tiny
worm or insect In the grass from dis
: lance of forty or fifty feet and will de.
scend upon the object with unerrlng
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 ia especially de
| tsIN a.,
bird can see imperfectly but a few
yards away. The eye of the owl is ar
ranged to concentrate great diverg
ence of the rays of light whereby the
bird can discern near objects in 1
4 faint light The owl can see very vel
at short distance even in thicl
darkness. The owls eye is somewha
dlshlike and fiat, so that much llgh
may enter. This arrangement per
mits too much light to enter the pupi
in the daytime, and therefore owls ar
= almost blind in the glare of the sun.
There is a correlation betweel
swiftness of wing and range of vision
The owl is exceedingly slow of mt
l. swiftness of wing and range of vision
3 vision, while the longer sighted an
IL mails are swift of foot. Fleet ANIMAL
q such as the antelope and deer an
II others living on boundless prairie
can see long distance and are swi
20 in movement. Animals living in tn
le woods have no need Of such Ion
vision nor swift movement. All ere
10 lures living in spacious regions al
!, strong light move rapidly and wilt
IL clear vision, as instance the fly cate
ID err, the king bird and the Gimme
swift, which take their food on Il
Id wing. The motions of these birds al
exceedingly graceful as well as rapi
at Their vision is both telescope and n
ne Iroscopic.
u Whether birds have the power
ne discriminating between different CT
ID. ors is an open question. An old be
es keeper holds that the bee knows o.
IS color from the other, and he thereto
ed paints the hives in various colors as
go guide to the weary, heavy laden VOL