Ornithology Midterm

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  1. Paleozoic
    • ~230 mya to ~600 mya
    • (oldest era we need to know)
  2. Mesozoic
    • ~65 to ~230 mya
    • Contains the Triassic, Jurassic, and Cretaceous
  3. Cenozoic
    present to ~65 mya
  4. Triassic
    ~180 mya
  5. Jurassic
    ~135 mya
  6. Cretaceous
    ~66 mya to ~135 mya
  7. Archaeopteryx
    ~160 mya
  8. Enantiornithines (general characteristics)
    • Reptilian: skull, teeth, pelvic girdle
    • Avian: Ribcage/sternum, forelimg, prominent pygostyle
    • No uncinated process
  9. How did enantiornithines differ from modern birds?
    • Direction of fusion of metatarsal bones
    • Scapula contains socket
    • Supracoracoideus along scapula
    • Ectothermic growth rings
    • (+reptilian skull, teeth, pelvic girdle)
  10. Empirical trends in oceanic island birds
    • Density compensation (super high densities, although only a couple of species make up the overall bird density)
    • Greater sexual dimorphism in morphology (also likely due to ecological release)
    • Longer bills (again ecological release; allows for larger prey)
    • More generalized habitat preferences¬†
    • Flightlessness
  11. Mating system partitioning
    • Monogamy ~90%
    • Polygamy ~3%
    • Promiscuity ~6%
  12. Polygyny Threshold axes
    • Territory on x axis
    • Benefit on y axis
  13. Types of polyandry
    • Classical - Simultaneous and Sequential
    • Cooperative
  14. Faunal regions
    • Oceanic
    • Neartic
    • Neotropic
    • Afrotropic
    • Palearctic
    • Antarctic
    • Australasian
    • Indo-malay

Card Set Information

Author:
eeliz1
ID:
329513
Filename:
Ornithology Midterm
Updated:
2017-03-14 14:23:33
Tags:
ornithology
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Description:
Midterm
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