I think many birds will gladly eat them while they're smallish. Once they get large, it's probably only the more dedicated insectivores that will go for them. Like cardinals. Here's video of a cardinal eating a similar sized caterpillar that could be a hornworm. https://www.youtube.com/watch?v=ktWIEnqKK34 (Warning: the video is a little gross, as the bird really mangles the caterpillar). I haven't personally seen cardinals in the act of eating a hornworm, but something must be doing so because I only find about 2 a year, but I see the moths in my yard. And cardinals do like to nest in my neighbor's hawthorn bush and use my garden as an insect larder.

LOL! Yes tree frogs are incredibly loud! I had about 5-6 singing to each other yesterday evening in the back yard and I could hardly hear my family talking to me while out on the deck! They are really hard to find too. I have one that retires to a little ledge on the top of my shed every year.....same spot. He's so cute! I love going to sleep with my windows open so I can hear them, but sometimes, I just have to close the window 'cause they are sooooooo loud! They are pretty amazing little creatures. I think they are attracted to my backyard because I have several little water gardens. They deposit their eggs in the water. They are so sensitive to the presence of water, that if I go out to just water a few plants, they start singing! I don't know if they see the water, or just hear or smell it! Ain't nature grand? :)

Nope, the who in a great horned is a distinctive who with a deep tonal quality. This was definitely more of a child's slide whistle quality, more of a toot. I'm thinking it was a northern saw-whet as it most closely matches that tonal quality. Here is a link that might be useful: Listen to

Also, if you look at the range map in the All About Birds site, robins live year-round in most of the 48 lower states. Some people insist that we see different robins in the winter than in the summer - that we're seeing Canadian birds that migrated south and our summer robins flew even farther south. I don't know if this is true - maybe someone here has some information. Claire