different shapes determine what types of food that bird can eat
A duck walks into a drug store and buys a Chapstick. The clerk says, "Will that be cash or charge?"
The duck says, "Just put it on my bill!"
Why birds are important
nectar-eating birds carry pollen
seed-eating birds carry seeds to new places
chief predators of pest animals (rats & mice)
Keeping the Streets Clean
Dancing is For the Birds
Toronto Blue Jays Vs. Baltimore Orioles...Blue Jays up to bat!
Your pilot today…
OWL PELLETS- products of a special gizzard
Several hours after an owl eats, the fur, bones,
teeth & feathers of its prey, still in the gizzard, are
compressed into a pellet the same shape as the gizzard.
Once formed, the pellet moves up from the gizzard and is regurgitated.
Owls can't eat while a fully formed pellet is present, blocking the digestive tract.
When an owl is ready to produce a pellet it usually closes its eyes, gets a funny look in its face, doesn't want to fly, and when the pellet is ready to come out, the beak is opened and the pellet simply drops out.
owl pellet dissection
OWL PELLET OBSERVATION
1. MEASURE THE OWL PELLET (IN MILLIMETERS)
a. LENGTH OF THE PELLET ___________mm
b. DIAMETER OF THE PELLET _________mm
2. IDENTIFY AT LEAST THREE PHYSICAL CHARACTERISTICS OF THE
PELLETS - SMELL, COLOR, TEXTURE, ETC.
3. WHAT DO YOU THINK IS INSIDE OF THE PELLET?
4. IN WHICH PART OF THE OWL DOES THE PELLET FORM?
5. WHY DOES THIS PELLET FORM?
6. AFTER OPENING THE OWL PELLET, WHAT TYPES OF BONES &
TEETH WERE ATTAINED?
Activity: Air Holes in Eggs
Eggs are covered with tiny holes, too small to see with the naked eye, that allow oxygen to pass into the growing baby and carbon dioxide to pass out. To see these breathing holes in action, make a small hole in one end of a chicken egg. Use a needle to break up the yolk, and shake all the yolk and white out of the egg. Seal the hole completely with tape. Now, place the egg in a bowl of water and hold it under. You will be able to see air bubbles rise right out of the egg’s shell as the air trapped inside seeps out through the tiny holes!