image credit: CSE/Pixcontroller

HatchWatch Clock 2019

Egg 1 On February 12, 2019 the first egg was laid at 6:43pm. Failed to hatch.
Approximately 20% of eggs do not hatch.
Most eggs that do not hatch are fertilized; however, embryo failure typically occurs in one of two critical periods:
either early in embryo development or late in development as hatch approaches.
H9 Age
310 days 16 hours 34 minutes 52 seconds
On February 15, 2019 the second egg was laid at 3:51pm and hatched on March 23 at 1:14pm.
H9 fledged on June 11 at 11:25am. (80 days)
H10 Age
308 days 13 hours 43 minutes 52 seconds
On February 18, 2019 the third egg was laid at 5:02pm and hatched on March 25 at 3:51pm.
H10 fledged on June 16 at 11:41am. (83 days)

Before hatch: the Hatchwatch Clock counts UP from the time the egg is laid.
After hatch: the Hatchwatch Clock is reset to track the age of the offspring.

  • Bald eagle embryo take 35 days to develop when incubated at 101 degrees.
  • The range for hatching is 34-41 days; only rarely would an egg hatch outside of this range.
  • Begin to watch for a ‘pip’ in the egg as day 35 approaches.
  • First eggs may take a bit longer to hatch than later eggs as they sometimes are not intensely incubated until the arrival of the second egg, the brood patch may also be less well developed, and the initial incubation temperature may be slightly lower.