Aquatic, flightless birds; belong to Order Sphenisciformes

Birds that have great vision, sharp claws and beaks; belong to Order Falconiformes

Birds with legs so small they cannot walk on land; belong to Order Apodiformes

Birds with limited flying ability; belong to Order Galliformes

Birds with perching feet & well-developed vocal cords; belong to Order Passeriformes

Brightly-colored vegetarians of the tropics; belong to Order Psittaciformes

Compact, plump birds that gather in flocks; belong to Order Columbiformes

Forest birds that nest in holes in trees; belong to Order Piciformes

Ground-living birds with long bills; belong to Order Gruiformes

Long-legged Waders; belong to Order Ciconiiformes

Terrestrial birds without a keeled breastbone; belong to Order Struthioniformes

These birds are nocturnal carnivores; belong to Order Strigiformes

Bird used as our national symbol:

Bird with the greatest wingspan:

Bird with the longest bill:

Birds in this group are found exclusively in the southern hemisphere

The largest and strongest living bird:

The smallest bird in the world:

The world's fastest animal:

Birds are believed to have evolved from small, two-legged dinosaurs called:

The study of birds is called:

The earliest known bird is:

Feathers are composed of which protein:

Feathers develop from tiny pits called:

The keel shape of this bone is unique to birds:

Which body system is more efficient in birds compared to all other vertebrates?

The covering of feathers on a bird is called:

What about feathers makes them essential for flight:

These feathers cover and streamline a bird’s body:

These feathers disintegrate as they grow, releasing particles that aid in waterproofing:

These feathers are soft and have no hooks on their barbules:

These feathers are hair-like and used for sensory:

The process in which birds rub their beaks over their feathers to keep them smooth & clean is:

Birds use this gland at the base of the tail to spread oily secretions over their feathers:

Birds are often nicknamed:

The process in which birds periodically shed and replace their feathers is called:

Bird bones are best described as:

This term describes birds which are generalists and feed on a wide range of food items:

This term describes birds which are specialists and feed on only one type of food:

Early birds fed on what type of food:

A stretchy organ used by birds to store excess food is the:

The first part of the stomach which softens food with acidic digestive juices is the:

The second part of the stomach which has muscular walls to grind food into small bits is the:

Most food digestion occurs in this organ:

Which animal(s) can’t digest bones, fur, or feathers so these materials from their prey are bundled together to form a bolus that is later regurgitated?

Birds have one common exit opening for digestive, urinary, and reproductive matter called a:

Bird vocalizations are produced by a special voice box called the:

The site of gas exchange in bird lungs in which the air flows past the respiratory surface in just one direction is the:

Which of the following words best describe the red blood cells of birds?

Which of the following words best describe the red blood cells of birds?

Bird hearts have how many internal chambers?

Birds have a salt gland to rid the body of excess salts which are excreted from this body part:

This sense is better in birds than in any other animal group:

Which terms best describe birds?

The term used for bird behaviors used to attract a mate; examples include building nests, dancing and posturing, bringing gifts, bright colorful displays, and singing:

Birds lay eggs that develop outside the body; the scientific term for this is:

Birds often mate so that each individual has only one mate. This relationship is referred to as:

Sometimes birds will have more than one mate during a breeding season. If one male mates with many females, the relationship is referred to as:

Sometimes birds will have more than one mate during a breeding season. If one female mates with many males, the relationship is referred to as:

The term used to describe offspring that are hatched in an advanced state and able to feed themselves almost immediately is:

The term used to describe offspring that are hatched in an undeveloped state, requiring care and feeding by the parents is:

What toxin was used in the 1950s to reduce mosquito populations and control malaria but ended up having harmful effects on bird populations causing it to eventually get banned?

Does this statement best describe birds or mammals?

Excrete their nitrogenous wastes as uric acid.

Does this statement best describe birds or mammals?

The lower jaw of mammals has one bone.

Does this statement best describe birds or mammals?

Have three middle ear bones, the malleus, incus, and stapes.

Does this statement best describe birds or mammals?

The skull borders against the first neck vertebra by a single occipital condyle.

Decide whether this statement is True or False:

All birds fly.

Decide whether this statement is True or False:

All birds have feathers.

Decide whether this statement is True or False:

Flight and tail feathers are often lost in pairs to help maintain balance.

Decide whether this statement is True or False:

Birds do not have a urinary bladder.

Decide whether this statement is True or False:

The body temperature of birds is typically cooler than that of humans.

Decide whether this statement is True or False:

Male birds lack a penis.