The whistling song of the field sparrow is a series of whistles that accelerate away. May 12, 2019 The whistling song of the field sparrow is a series of whistles that accelerate away. This Baltimore oriole has never played against the Minnesota Twins. A red-eared slider hanging out with its buddies. There is a hint of the rufous undertail coverts on this gray catbird. Lovey-dovey Eurasian collared-doves. ← A nest being built to a Baltimore oriole’s specification.It’s a lemon drop day thanks to goldfinches. →