Nov 3-Birds

Question 1

What are Anseriformes?

Answer 1

Waterfowl

Question 2

What are Falconiformes?

Answer 2

Most raptors-Falcons, eagles, etc.

Question 3

Birds are ___thermic and ___thermic

Answer 3

Endothermic and homeothermic

Question 4

Birds have lungs and ___

Answer 4

Lungs and air sacs

Question 5

What kind of eggs?

Answer 5

Hard shelled with amniotic fluid

Question 6

Birds evolved from what group of dinosaurs during what period?

Answer 6

Theropods during the Jurassic period

Question 7

Feathers originally evolved for what?

Answer 7

Thermoregulation

Question 8

Three main types of feathers?

Answer 8

Contour (for flight), down (insulation), and filoplumes (sensory roles)

Question 9

What are the two feather categories?

Answer 9

Plumaceous-downy, fluffy

Pennaceous-linked vaned feathers

Question 10

What is a calamus and rachis?

Answer 10

Calamus: hollow base of a feather shaft
Rachis: the rest of the shaft that supports the vanes

Question 11

Down feathers have no ___

Answer 11

No rachis; barbules lack hooks resulting in fluff

Question 12

What is a pygostyle?

Answer 12

Loss of tail; this supports the feathers

Question 13

Crop:

Answer 13

Softens food and regulates flow

Question 14

Proventriculus:

Answer 14

Secretes digestive enzymes

Question 15

Gizzard:

Answer 15

Helps grind food

Question 16

What format the triosseal canal?

Answer 16

The coracoid, scapula, and furcula

Question 17

Avian respiratory systems have a _________ flow

Answer 17

Unidirectional; air coming in does not mix with air exiting

Question 18

How do precocial birds hatch?

Answer 18

With feathers and eyes already open

Question 19

How do altricial birds hatch?

Answer 19

With no feathers and eyes closed

Question 20

What is DDT?

Answer 20

Thinned eggshells- increased nest failure

Question 21

What are Passeriformes?

Answer 21

Song birds/perching birds- crows, robins, cardinals, etc.