Like it says
on birds.cornell.edu they "nest in dense shrubs, small trees, and vines." -- that certainly is the case here,
there was several years of overgrown vegetation in and around the area where this nest was accidentally found,
with at least two hungry young birds in it. You can see the female bird making one of her many trips to the nest (which is on her left).
Because the Gray Catbird easts insects and small fruits, it is not seen at the backyard birdfeeder.
This may not seem like much, and very difficult to photograph, but this hummingbird was feeding on the Butterfly Bush this afternoon (July 31 2016)
From Google search, probably an immature ruby-throated hummingbird (which when immature does not have a ruby throat, go figure).
At first this mated pair stopped by for dinner around 6:30pm,
but now they stop by for breakfast, lunch, and dinner every day to eat their beloved corn!