Xenospiza
Distracted
This must be very useful for people who can actually remember such stuff.
I see so few terns that any bird not in summer plumage has me in despair...
subalpinebirding.com
I see so few terns that any bird not in summer plumage has me in despair...
Separation of 1cy Little and Least Terns and the first Least Tern for Spain — subalpinebirding
The identification of Little and Least Terns is usually considered extremely difficult, especially so in first calendar year birds. In this post we describe the upperwing pattern of Least Tern in juvenile plumage as a very useful character to easily separate both species. The head pattern is also an
subalpinebirding.com
