I wanted to know if I could find an objective and reliable feature that would allow me to distinguish any elaenia from any empidonax, and it turns out it’s the pattern on the folded wing. The presence or absence of pale edges on the primaries is the best single feature to focus on to be sure which genus you are looking at.
Pine Siskins – streaky relatives of goldfinches – are so distinctive as a species that we tend to overlook their considerable individual variation. Siskins are unusual among the small finches in that males and females look nearly identical. Subtle individual differences in the amount or intensity of streaking, or in overall color, have no bearing …
Variation in Pine Siskins and the so-called “green morph” Read More »
One of the great pleasures of birding is that you can run into something new and unexpected anytime, anywhere. This summer (June and July 2020) I’ve been birding around my local neighborhood in Deerfield, MA, and even though I’ve lived here for three years now, every day still brings new discoveries. A recent morning produced …
Scarlet Tanagers are bright red – but this one is yellow Read More »