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  • 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

commissure

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GLOSSARY / commissure

corner of the mouth, the point where the soft keratin of the ricti of the maxilla (upper beak) and mandible (lower beak) meet

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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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