The Witch at the Window — Ruth Chew

For decades, Ruth Chew's classic chapter books full of everyday magic have enchanted early readers. Now that they are in print again, a new generation can fall under her spell and fall in love with reading.
 
Why did a witch appear at Nick's window?
 
Could it have something to do with a mysterious tree in Prospect Park? Ever since Nick and Marjorie discovered it, strange things have been happening. First, they find an odd spoon with no owner. Then a spooky bird follows them home -- and talks to them! It must be the witch's magic!
 
But where has she vanished to? And what is she looking for?