Heat and incubation

There is not a lot of activity to report during incubation and I’m really skeptical that this clutch of eggs will hatch due to the heat wave we experienced.  Their first few days saw temperatures of 107-110F degrees outside the box. Research shows eggs and young chicks can’t survive temps above 107, and the temperature inside the box has probably been in the 120-130F range. Mama continues to sit on them, though.

Daddy on the mealworm feeder.

Next year I’m going to let the bluebirds raise their first brood in their familiar location and then move the box to the afternoon shade of a little Live Oak tree in the back yard.  It is really close to the house, but I think the birds are familiar enough with us, they will follow.

We got some respite from the heat wave yesterday with some much needed rain and clouds that kept the high temperature to 78 degrees.  Highs are predicted to be less than 100 for a few days, but I suspect the damage is done to the fourth clutch of eggs.

Fourth brood summary:

  • Dates for nest building unknown
  • First egg laid                                       ~01 August
  • Second egg laid                                   ~03 August
  • Incubation began                                  05 August

About lindell dillon

Lindell Dillon is retired and lives in Norman, OK. He grew up in Duncan, attended Cameron College and graduated from the University of Oklahoma. His interests include photography, nature, birding, and investing. Oklahoma Master Naturalist, alumnus Norman Police Department Citizens Academy.
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2 Responses to Heat and incubation

  1. So very hot…glad they got in some broods before this one.

  2. Hi Lindell, Oh the poor birds in all that heat! I think you are wise in your plan to move the box to a shady spot. I am going to do the same for my feeders now that I have a new type with metal perches – too hot and the birds suffer. Have an excellent day!

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