Answer:
Retired people want these to be large and birds want them to hatch.
They are the group who manages the winged engines of war.
What can go up but never come down?
A squiggly line tells you when you've done it wrong
One more than a duet.
Almost everyone needs it, asks for it, gives it. But almost nobody takes it.
Easy
Animal
Difficult
Food
Funny
Kids
Logic
What am I?