Habitat, niche, and the history of the species recovery for the American Bald Eagle.
See the two pages also in this Discussion Module for instructions –
– Post Format for your Main Post & Replies, and –
– Links to websites and videos having information you can use for your research.
Main post of your assigned topic due:
This forum allows students to learn the properties of ecosystems and microevolution by researching the habitat, niche, and species recovery of the American Bald Eagle – also a local species.
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| Research and answer the following in 250-500 words: | |
| 23 YL | How did the Endangered Species Act [16 U.S.C. 1531-1544] help species avoid extinction? What were its basic provisions? When was it enacted [year]? |
| 24 RK | What were the major reasons the bald eagle populations across North America went into decline before 1978? That is, what things &/or activities “killed them off?” |
| 45 SS | When [what year] were bald eagles completely delisted from “endangered” to “threatened?” How many bald eagles were in various parts of the USA at that time? |
| 43 LS | What do bald eagles eat? Where do they typically hunt? How does that influence their habitat? |
| 44 TS | What is a “molt?” How often do immature and mature eagles molt? Can they fly during a molt? |
| 21 AL | Describe the bald eagle’s typical habitat. How large is a nest (eyrie) on the average? Do they migrate? |
| 55 SY | In what US State were bald eagles NEVER declared “endangered?” How many bald eagles (population count) are currently in this state [latest population count]? How did they survive and/or not encounter the things that caused the bald eagles in the other States to become endangered or threatened? |
| 44 TS | How do bald eagles regulate their body temperature? What’s the difference between down feathers and flight feathers? Why do the parents “sit on” the eggs and hatched chicks? |
| 35 SP | The bald eagle recovery/management plan divided the lower 48 states into five regions? Where are these regions? Why manage them in these separate areas instead of across the entire United States? |
| 44 TS | How does an eaglet hatch? How long does an egg take to mature, from when the female lays the egg to when the chick begins to break out of the egg? Describe the events during the hatch? |
| 44 TS | What is DDT? When was it used in the USA, and when was it banned? How did it impact the bald eagle? |
| 44 TS | How well do eagles “see?” Do they have color-vision? How can they locate a fish while flying very high over a lake? Can they see at night, like an owl? |
| 51 AX | What is the current conservation status of the bald eagle in California? According to California’s Midwinter Bald Eagle Surveys, roughly how many bald eagles have been found in California? Where in California are most bald eagles found? |
| 34 XN | Describe the laws [Acts] that currently protect bald eagles. What activities do they prohibit? |
| 44 TS | Describe the flight courtship behavior of bald eagles. How many different mates does a bald eagle have during its lifespan? Do the males or females or both take care of the eggs and young? |
| 22 CL | How much food does a typical bald eagle consume in a year? How much do chicks eat before they’re able to leave the nest? |
| 42 DT | When is the best time of year to view bald eagles in California? Where are a few of these viewing areas? Where is the largest concentration of eagles found at the time of year when it’s best to view them? |
| 25 CL | What is the range of bald eagles in California? How many young were produced during the 2016 population count [or a more current one]? Where are the closest bald eagles to San Mateo located? |
| 11 AA | How many eggs can a typical bald eagle lay each year? How long do the chicks take to fledge [develop wings that allow them to fly]? How do they change feather color? What time of year [from what month to month] do bald eagles breed [breeding season]? |
| 44 TS | How did the Endangered Species Act [16 U.S.C. 1531-1544] impact the survival of the bald eagle? Where in the United States were bald eagles declared “endangered” or “threatened?” – and in what year? |
| 14 TCA | What are some of the reasons it’s illegal to collect bald eagle feathers, even though bald eagles naturally lose feathers and grow new ones [molts]? Are there exceptions to this prohibition? If so, who is allowed to collect the feathers? |
| 54 RX | What is the average lifespan of a bald eagle in the wild? In captivity? How many years do bald eagles take to mature? |
| 44 TS | How do bald eagles (and raptors in general) form a “pellet” from the components of their food that they cannot digest and absorb through their digestive system? What unique parts of their digestive system form the pellet? |
| 12 JF | What do bald eagles look like? Wingspan, average weight? Feather coloring of the adults, juveniles, and chicks? Are there differences between the males and females (e.g., feather colors, weight)? |
NOW – See the pages for formatting instructions and research links!
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