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Black-Crowned Night Heron

Black-Crowned Night Heron. By: Tabitha Edwards February 10, 2014 Period: 3. Latin Name: Nycticorax nycticorax. Common Name: Black-Crowned Night Heron. Life History & Physical Characteristics. Male and female take turns caring for the young.

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Black-Crowned Night Heron

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  1. Black-Crowned Night Heron By: Tabitha Edwards February 10, 2014 Period: 3

  2. Latin Name: Nycticorax nycticorax Common Name: Black-Crowned Night Heron

  3. Life History & Physical Characteristics • Male and female take turns caring for the young • Adults are light-gray birds with a neatly defined black back and black crown, weigh 2 lbs • Immatures are brown with large white spots on the wings and blurry streaks on the under parts • Adults have all-black bills; immatures have yellow-and-black bills

  4. Reproduction • Sexually mature at 2 years • eggs are laid at 2 day intervals, beginning 4-5 days after pair formation • Incubation lasts 24-26 days • 3-5 young per pair

  5. Food & Water Preference • Opportunistic Feeder • Mainly Fish • Leeches • Earthworms • Insects • Crayfish • Amphibians • Rodents • Carrion • Plant Materials • Garbage

  6. Food & Water Preferences • prefers to feed in shallow waters • grasps its prey with its bill instead of stabbing it • 'bill vibrating'-opening and closing the bill rapidly in water, creates a disturbance which lures prey • evening to early morning

  7. Habitat

  8. Range Territory • Nest • Feeding grounds

  9. Ecology and Behavior • When feeding: plunges from the air onto water • When walking: usually keeps its head and neck lowered rarely runs • Crepuscular hunters • Gregarious

  10. Predators • Crows • Humans • Diseases • Bird flu • Parasites • None known

  11. Status & Cause for Listing • Delaware: endangered • Number and size of colonies have declined • Federal: not listed as threatened, endangered, or extinct • all migratory birds are protected under the federal Migratory Bird Treaty Act of 1918.

  12. Conservation Management Needs • Habitat construction and protection • Nesting grounds • Wetlands • Monitor predators of young

  13. Impacts to Ecosystem if Eliminated • Increase in heron’s prey species

  14. Conclusion • The Black-Crowned Night Heron is • Migratory • Gregarious • Crepuscular • Beautiful • Unique So we need to help protect their colonies to ensure that they can beautify Delaware for many years to come

  15. References • http://www.allaboutbirds.org/guide/black-crowned_night-heron/id • http://animaldiversity.ummz.umich.edu/accounts/Nycticorax_nycticorax/#reproduction • http://www.nhptv.org/natureworks/blackcrown.htm • http://birds.audubon.org/species/blanig2

  16. Thank You • Questions?

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