Downy Woodpecker and Hummingbirds

This little guy, the smallest of woodpeckers, is a frequent visitor to the backyard
plum tree.  The picture is of a juvenile, which is consistent with the one in the
backyard.  His beak is quite small for a woodpecker.

Rufous Hummingbird--seen in backyard and at feeders on front porch and back
deck.  Hummingbirds are amazing.  Facts:  They do perch.  Their feet are fairly
weak.  They fly forwards, backwards, shift sideways, and stop in midair.  Their
wings beat 60-200 times a minute.  They can fly up to 60 miles an hour.  They
live 5-6 years in the wild.  They are the smallest bird in the world.  They consume
1/2 o their weight in sugar each day.

During the night I heard something like a small pebble or stone being thrown at
my window.  Curiosity getting the better of me, I got out of bed and turned on the
light.  There in my window was a hummingbird--very persistent female--it was 1 AM. 
I didn't know they flew at night.  The next day, the humming bird feeder was re--filled
and they have let me sleep at night since.

When I lived in Hickory, I watched a ruby throated hummingbird run off a bluejay.
He would dive down and prick the bluejay with his beak.  The jay left and the
hummingbird seemed happy then.