It was cool, wet, and a little breezy yesterday, not exactly a perfect day for photography, but I made a trip anyways to Occoquan Bay National Wildlife Refuge. My persistence was rewarded when I was able to capture some images of several cute little Yellow-rumped Warblers (Setophaga coronata).
When it comes to warblers, I generally have two big problems. Warblers seem to like to perch in the center of clusters of branches and it is often virtually impossible to get unobstructed shots of them. Even if I am able to get a clear shot, I am faced with the equally daunting challenge of identifying the bird. There appear to be a large number of warblers with similar patterns and colors and there are innumerable variations based on season, age, gender, and region.
I was pretty confident that the birds in these images were Yellow-rumped Warblers, but for reassurance I checked with some experts on a Facebook birding forum. One of them humorously noted that this bird is often informally referred to as “Butterbutt.”
© Michael Q. Powell. All rights reserved.
Mike Powell 
Butterbutt–I like that! I am reminded of a common nickname for a bittern, which comes from the sound of its vocalization, “butterbump.” How clever we are!