Nocturnal Animals - PowerPoint PPT Presentation

1 / 25
About This Presentation
Title:

Nocturnal Animals

Description:

Nocturnal Animals – PowerPoint PPT presentation

Number of Views:181
Avg rating:3.0/5.0
Slides: 26
Provided by: BMag3
Category:

less

Transcript and Presenter's Notes

Title: Nocturnal Animals


1
Nocturnal Animals
2
What does nocturnal mean?
  • This refers to animals that sleep during the
    daytime and are awake during the nighttime.
  • They can be mammals or reptiles.

3
The Eyes Have it!
  • Nocturnal animals have special pupils that help
    them see well at night.
  • Their pupils can sometimes seem to glow when
    light shines on them.

4
The Pupils!
  • Their pupils come in different shapes.
  • Some pupil shapes are better than others at
    closing in bright light.

http//www.pbs.org/wgbh/nova/kalahari/nightvision.
html
5
A video on Nocturnal Cats
World's Best Series Wild Cats. BBC.
2001.unitedstreaming. 17 September
2006lthttp//www.unitedstreaming.com/gt
6
Look at these eyes and see if you can guess the
nocturnal animal they belong to.
7
Can you guess who I am?
http//www.pbs.org/wgbh/nova/kalahari/nightvision.
html
8
A Cuttlefish
http//www.pbs.org/wgbh/nova/kalahari/nightvision.
html
9
  • The cuttlefish is a cephalopod that buries itself
    in sediment by day and becomes active at night.
    The pupil of its highly sensitive eye, which sees
    as well as a human eye, is protected with a
    flap-like appendage that can close completely in
    bright light.

10
Can you guess who I am?
http//www.pbs.org/wgbh/nova/kalahari/nightvision.
html
11
A Fruit Bat
http//www.pbs.org/wgbh/nova/kalahari/nightvision.
html
12
  • Fruit bats are far from blind. In fact, they rely
    primarily on their eyes for navigation -- unlike
    most bats, who navigate by echolocation.

13
Can you guess who I am?
http//www.pbs.org/wgbh/nova/kalahari/nightvision.
html
14
A Flying Gecko
http//www.pbs.org/wgbh/nova/kalahari/nightvision.
html
15
  • Geckos have eyesight comparable to a cat, giving
    them the best eyesight of all lizards. The flying
    gecko has an unusual scalloped pupil. When fully
    contracted, the pupil can close completely --
    except for a few tiny pinholes where the
    scalloped edges do not quite meet.

16
Can you guess who I am?
http//www.pbs.org/wgbh/nova/kalahari/nightvision.
html
17
  • Pit vipers use two senses to better locate prey
    at night sight and a heat-detecting ability.
    Deep pits, which lie on each side of the snake's
    face between the nostril and the eye, are capable
    of sensing the warmth given off by a human hand
    held a foot away. Heat and visual data are sent
    to the pit-viper's brain, where the two types of
    data are transposed into a single image of the
    prey.

18
Can you guess who I am?
http//www.pbs.org/wgbh/nova/kalahari/nightvision.
html
19
http//www.pbs.org/wgbh/nova/kalahari/nightvision.
html
20
  • So extraordinary is an owl's night vision, it can
    spot a mouse creeping through the underbrush more
    than a football field away on a moonless night.

21
Can you guess who I am?
http//www.pbs.org/wgbh/nova/kalahari/nightvision.
html
22
http//www.pbs.org/wgbh/nova/kalahari/nightvision.
html
23
  • The tarsier of Southeast Asia has the largest
    eyes relative to body size of any living
    creature. The eyes are so enormous that they
    cannot be moved in their sockets. To compensate,
    tarsiers can swivel their necks 180 degrees in
    either direction. Though most nocturnal primates
    eat insects, the tarsier likes meat and has the
    vision, speed and reflexes to catch small prey in
    pitch darkness.

24
Nocturnal animals are fascinating!
25
Works Cited
  • All pictures and information obtained from
  • NOVA Online
  • http//www.pbs.org/wgbh/nova/kalahari/nightvision.
    html
Write a Comment
User Comments (0)
About PowerShow.com