We just love the Evening Grosbeaks that congregate at our many feeders during the winter months. The males, in particular, are welcome since their wild & bright yellow eyebrows are a relief from the white & gray & black of our snowy time. We've noticed there haven't been as many Evening Grosbeaks the last few years. This is a sadness we truly feel, in fact, the species has declined a remarkable 91% since the year I graduated high school.
It seems that the Greater Scaup is also in trouble. A 75% decline since 1967. I admit that I enjoy duck hunting & these diver ducks are fun to shoot.
The Northern Pintail, Loggerhead Shrike, & Field Sparrow fill out the top five, but I suppose it's a misnomer to describe a list like this as top, nonetheless, this is not a good thing.
Go to the Audubon website, here, to find out what you can do about this. I am extremely pessimistic about the future lives of these birds, among many, many other sentient beings, including, of course, us.