I had the pleasure in the last several days of viewing two birds which are both very uncommon in my part of Pennsylvania. The first find was a Wilson's phalarope discovered in a pond near the town of Hershey.
The phalarope is not only rarely seen in south central Pennsylvania but is also very unusual in that the female is the more brightly plumaged of the two sexes and leaves to the male the tasks of nest-building, incubating the eggs, and raising the young. I don't know if this is what people mean by "transgendered," but it's certainly unusual behavior in the animal kingdom, and one wonders how this sex-role switch ever came about. They also have an odd way of feeding. They'll sometimes paddle quickly in a tight circle in the water causing insects and other food items to be drawn to the surface where they can be easily caught and eaten.
The second bird is an Upland sandpiper found in a grassy, reclaimed landfill in southern York County. The Upland sandpiper is related to the shorebirds one sees on beaches and mudflats, but it itself is rarely seen near water. Instead, this is a bird of dry, grassy, upland fields. They're very uncommon in Pennsylvania and especially so in the south-central part of the state.
The Upland sandpiper gives a unique call that sounds almost exactly like a "wolf-whistle," which is a little disconcerting when you hear it because it doesn't sound like something that would come from a bird.