White-crowned Sparrow
Lake Park, Milwaukee, WI USA
And then suddenly, there they are! The harbinger of summer comes enmasse. They are not there until suddenly they are every where. Every spring, they appear suddenly, daily, until they're gone. They're only visible for a few weeks in late April and early May but they appear every where then.
As with many birds, its less a question of where to look but when to begin looking. Photo © copyright by Joe Luedtke.