Mallard and Ruddy are species of what bird?

More Questions:

What are the two most popular types of coffee beans?

Which number system uses only the symbols 1 and 0?

What type of building or facility gets its name from the Greek meaning "to exercise naked"?

Who was the subject of almost 100 Rembrandt paintings, drawings and etchings?

What author created the character of Tom Swift?

Whose 1863 novel "Paris in the Twentieth Century" was discovered in a trunk and published in 1994?

Tunisia is part of which continent?

The Shenandoah Valley is located in which US state?

What is a group of mosquito eggs called?

What astronomical aid takes its name from Greek words meaning "far seeing"?

A male horse is known as a colt until it reaches what age?

In the movie "Clockwork Orange', Alex DeLarge drank what?

In the TV show "The Simpsons', which character has a pacemaker?

In the TV show "The Simpsons', who is Patty and Selma's favorite TV hero?

What 1972 movie revolves around the happenings at the Kit-Kat Klub?