Bluebirds have commenced nesting for first brood. Photo taken today–March 23, 2011. This is Day 4 of nest building! Nest is not quite finished (a bit lopsided now) – my prediction is approximately 2 more days to finish and create the perfectly shaped cup–this building is earlier for first brood 2011 than past 2 years. White Pine needles (choice one for bluebirds if available). The scoring seen on left side of picture is a “fledging ladder” or toe-hold used by baby birds to use at fledging time (maiden flight) as assistance to help them stay at entry hole. However, bluebirds’ feet don’t need this as much as Tree Swallows do, but I like the scoring on all of my boxes. Last two years, first egg laid was April 8 (one of those years was on Easter morning! I remember it distinctly as I visited a few of my boxes late afternoon on the holiday.) If this warmer weather continues, she may start laying any day. If we have a sudden cold snap during egg laying (usually one per day in the morning), she’ll delay incubation until the warmer weather returns again. Her mate will bring her food as she lays her clutch, usually in the mornings. In the afternoons, she most likely will leave the box for a break, exercise her wings, and to hunt for her own food. On my trail, generally I get 5 eggs per clutch. I rarely have seen 6 eggs in my boxes.