Nest Box Visits SF South Bay 2024

Chestnut-backed chickadee, Bewick's wren, and oak titmouse scouting visits tabulated

I have four nesting boxes around my house on the South Bay Peninsula. During the winter months leading up to the spring 2024 nesting season, birds of multiple species have been entering the boxes to scout for suitable nesting cavities, as revealed by in-box cameras.

Back Tree, Back Fence, Front Tree, and Neighbor boxes

Back tree Back fence Front Tree Neighbor


Spreadsheet summary of 2024 bird box activity



T
= Oak titmouse visit;   W = Bewick's wren visit;   C = Chestnut-backed chickadee visit
n = nest building;   r = night roosting;   e = egg laying;   i = incubation;   f = fledging


  • In past years, the Back Tree box has consistently hosted chestnut-backed chickadee families with successful fledging of four to six nestlings.

  • The Back Fence box is equipped with a stereo 3-D camera. Birds have entered the box but have not used it for nesting.

  • In 2022, a pair of Bewick's wrens built a complete nest in the Front Tree box but did not lay any eggs in it.

  • The Neighbor box is new for this 2024 season and has not been used for nesting.

  • As the 2024 season progresses, I expect the birds to make more and more visits to the boxes as they decide on where to build their nests. Each species is territorial and will not allow another pair of the same species to nest nearby. However, different species could occupy multiple boxes.

    In mid-February, a Bewick's wren started entering the boxes bringing plant material into one of them (see 3-minute video). I think this is to claim the box rather than to actually build a nest.

    Wren claiming box


    Chickadee nest building started on March 15, 2024. The mother bird died the day after she laid the first egg.

    Back to 2024 season web page


    © 2024 Gray Chang
    SFBayNestCam [at] gmail [dot] com