I startled a pair of birds in the park by my house in the Bronx, north of Manhattan in New York city. They were foraging in the leaves, and took off to high branches when I approached. They had the telltale dark chest patch (and the behavior) of northern flickers. But they were a dull gray and had none of the chest spots or bars on the back that are typical of northern flickers. I have read that juvenile northern flickers are much duller in color than adults, but I haven't been able to find any photographs of juvenile northern flickers to confirm if they're what I saw. Does anyone have any juvenile northern flicker photos, or have any idea what else these birds might be?