Curve-billed Thrashers (Toxostoma curvirostre) are common here in Tucson, and they will happily visit birdseed feeders. They seem to prefer the small seeds like millet.
Curve-billed Thrashers are perhaps one of the snoopiest birds I've ever seen. If I leave a door to my house or garage open, before long a Curve-billed Thrasher will be inside exploring around. It's almost as if opening a door to my house creates a powerful vacuum that sucks them in. No car windows can be left open beyond the tiniest crack in my driveway or you'll either find a Curve-billed Thrasher inside or the irrefutable evidence that one's been there in the form of bird droppings all over your upholstery.
I think that their illicit explorations must make them really nervous because I always seem to find an extraordinary number of bird droppings all over the place after one's been in the house. Because of this, I like to call these birds the "snooper-poopers".
Not only are Curve-billed Thrashers snoopy, they are also highly intelligent. When I used to have a vegetable garden, no matter what I did, the Curve-billed Thrashers would always outsmart me and find a way in. These birds adore tomatoes, and to check them for ripeness, they'll peck a small hole in every single one.
Of course, intelligence doesn't equal wisdom, so I used to find these foolishly clever birds tangled up in the bird netting that swathed my vegetable garden. Because I was concerned about them being hurt by the bird netting and I didn't want to build a giant, ugly garden cage, I gave up entirely on vegetable gardening.
Despite the problems that they've caused me, I really am extraordinarily fond of these inquisitive birds, and I usually have about 10 or so of them in my yard. They adore raw hamburger, and I was even able to get one of them to eat hamburger out of my hand once. They also diligently search the ground around my house for insects and spiders, and I greatly appreciate their natural pest control efforts.
These sharp-eyed birds will use side to side sweeping motions of their curved bills to turn over rocks and leaf litter in their search for insects and spiders. I often hear them rustling about under my windows. Sometimes I'll hear the rustling stop and I'll get a funny feeling at the back of my neck like someone's watching me. I'll turn to look at the window and there one will be intently staring inside. And I know what that Curve-billed Thrasher is thinking; "I wonder what's inside there? I'll have to look for a way in!"