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  • BLOG
  • BIOLOGY
    • HORMONES
      • THE AVIAN ENDOCRINE SYSTEM
      • HORMONES: REFERENCES
    • LIFE HISTORY
      • LIFE HISTORY or ANNUAL CYCLE
      • LIFE HISTORY: REFERENCES
      • FEATHERS & MOLT: REFERENCES
      • MOVEMENT & MIGRATION: REFERENCES
    • REPRODUCTION & HORMONES
      • REPRODUCTION & HORMONES
      • REPRODUCTION HORMONES: REFERENCES
    • PHOTOPERIODISM
      • PHOTOPERIODISM & REPRODUCTION TIMING
      • PHOTOPERIODISM: REFERENCES
    • MEASURING AN EAGLE
      • MEASURING ADULT, SUBADULT, AND JUVENILE BALD EAGLES
      • ADULT MEASUREMENTS TABLE
      • SUBADULT AND JUVENILE MEASUREMENTS TABLE
      • MEASURING AN EAGLE: REFERENCES
    • SALIVA
  • BREEDING
    • OVIPOSITION (Egg-laying)
    • EGG-LAYING TIMINGS
    • HATCHING
    • HATCH TIMINGS
    • NUMBERS FROM THE NESTS
      • EGGS, NESTLINGS, AND FLEDGLINGS
      • SUCCESS RATES OF CLUTCHES AND BROODS
      • LOST EGGS AND FAILED FIRST CLUTCHES OF EGGS
      • LOST NESTLINGS AND FAILED BROODS OF EAGLETS
      • NEST NUMBERS: REFERENCES
    • SECOND CLUTCHES
    • WHEN BALD EAGLE EGGS DON’T HATCH
    • INTRASPECIFIC INTRUSIONS
    • COOPERATIVE BREEDING
      • WHAT IS COOPERATIVE BREEDING?
      • HOW AND WHY BIRDS COOPERATIVELY BREED
      • COOPERATIVE BREEDING AMONG BALD EAGLES
      • COOPERATIVE BREEDING: REFERENCES
  • EAGLET GROWTH
    • EAGLET DAILY PHOTOS & MILESTONES
    • REFERENCES
  • BALD EAGLE NEST CAMS
    • LINKS TO STREAMING CAMS
    • LIST OF BALD EAGLE NESTS
    • EGG CALENDARS 2009-2024
    • 2019-2020 BREEDING SEASON
    • 2020-2021 BREEDING SEASON
    • 2021-2022 BREEDING SEASON
    • 2022-2023 BREEDING SEASON
    • 2023-2024 BREEDING SEASON
  • GLOSSARY
  • CONTACT

Tag Archives: intrusions

BREEDING

This menu item tracks the stages of the Bald Eagle breeding season from the formation of a pair bond through the incubation and hatching of eaglets.  Pages will cover (links are added as pages are published):

  • Pair formation, bonding, copulation
  • Female and male reproductive systems
  • Eggs
    • Formation and fertilization
    • Oviposition (egg-laying)
    • Time intervals between eggs
    • Embryo development
    • Hatching
    • Time intervals between egg-laying and hatch
  • Numbers from the Nests
    • Eggs, Nestlings, and Fledglings
    • Success Rates of Clutches and Broods
    • Lost Eggs and Failed First Clutches of Eggs
    • Lost Nestlings and Failed Broods of Eaglets
    • Nests Included
  • Second Clutches
  • When Bald Eagle Eggs Don’t Hatch
  • Intraspecific intrusions at Bald Eagle nests
  • Cooperative breeding

Click here for pages about eaglet growth and development from hatch through fledge.  (See Menu item “Eagle Growth.”)

© elfruler 2017-2018

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© elfruler 2016-2025
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  • HOME
  • BLOG
  • BIOLOGY
    • HORMONES
      • THE AVIAN ENDOCRINE SYSTEM
      • HORMONES: REFERENCES
    • LIFE HISTORY
      • LIFE HISTORY or ANNUAL CYCLE
      • LIFE HISTORY: REFERENCES
      • FEATHERS & MOLT: REFERENCES
      • MOVEMENT & MIGRATION: REFERENCES
    • REPRODUCTION & HORMONES
      • REPRODUCTION & HORMONES
      • REPRODUCTION HORMONES: REFERENCES
    • PHOTOPERIODISM
      • PHOTOPERIODISM & REPRODUCTION TIMING
      • PHOTOPERIODISM: REFERENCES
    • MEASURING AN EAGLE
      • MEASURING ADULT, SUBADULT, AND JUVENILE BALD EAGLES
      • ADULT MEASUREMENTS TABLE
      • SUBADULT AND JUVENILE MEASUREMENTS TABLE
      • MEASURING AN EAGLE: REFERENCES
    • SALIVA
  • BREEDING
    • OVIPOSITION (Egg-laying)
    • EGG-LAYING TIMINGS
    • HATCHING
    • HATCH TIMINGS
    • NUMBERS FROM THE NESTS
      • EGGS, NESTLINGS, AND FLEDGLINGS
      • SUCCESS RATES OF CLUTCHES AND BROODS
      • LOST EGGS AND FAILED FIRST CLUTCHES OF EGGS
      • LOST NESTLINGS AND FAILED BROODS OF EAGLETS
      • NEST NUMBERS: REFERENCES
    • SECOND CLUTCHES
    • WHEN BALD EAGLE EGGS DON’T HATCH
    • INTRASPECIFIC INTRUSIONS
    • COOPERATIVE BREEDING
      • WHAT IS COOPERATIVE BREEDING?
      • HOW AND WHY BIRDS COOPERATIVELY BREED
      • COOPERATIVE BREEDING AMONG BALD EAGLES
      • COOPERATIVE BREEDING: REFERENCES
  • EAGLET GROWTH
    • EAGLET DAILY PHOTOS & MILESTONES
    • REFERENCES
  • BALD EAGLE NEST CAMS
    • LINKS TO STREAMING CAMS
    • LIST OF BALD EAGLE NESTS
    • EGG CALENDARS 2009-2024
    • 2019-2020 BREEDING SEASON
    • 2020-2021 BREEDING SEASON
    • 2021-2022 BREEDING SEASON
    • 2022-2023 BREEDING SEASON
    • 2023-2024 BREEDING SEASON
  • GLOSSARY
  • CONTACT
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