Tyler StoufferHonors Biology II,

Period 5

Bald Eagle

Niche of The Bald EagleHaliaeetus leucocephalus

•Bald Eagle’s habitat is always near water sources. This may include lakes, rivers, marshes, bays and oceans. The female always build their nest far off the ground so predators can’t get to their young.

•Bald Eagles depends on many types of food. They will eat fish or small mammals. They mainly seek for fish. They also attack other smaller birds.

•The eagle mainly hunts during the day. The way they hunt is they will fly over bodies of water and look for fish with their excellent eye sight. They can spot a fish in the water while they are hundreds of feet in the air. When they see the prey from that height the swoop down and snatch the prey. They will often be caught stealing food from other birds. Another method of hunting for the eagle is they will sit high up in a tree and scan the land for prey.

Factors which Affect Birth Rate of Bald Eagles

• Bald Eagles mate when the females reach five.• They mate every year.• What is your assigned animal’s gestation period?• They will lay two to three eggs every time?• They male and female eagles will equally watch the nest while the

other one hunts for food for the young.• When does your assigned animal begin and end its reproduction?

Factors Which Affect the Death Rate of Bald Eagle

• Bald Eagles are close to the top of the food chain so they eat a lot of different species of animals and fish. But when they died other birds like vultures will pick at he dead body of the eagle.

• Bald Eagle can live up to 48 years old but most eagles in the wild life live up to 30 years old.

• List and describe any common parasites which may harm your assigned animal.

• Over population would mean less food for the eagle to eat and then eventually the eagles would die down.

Food Chain of Assigned Organism

Producer

Autotroph

Primary Consumer

Omnivore

Secondary Consumer

Carnivore

Tertiary Consumer

Omnivore

Food web of Bald Eagle

Herbivore

Producer Omnivore

CarnivoreCarnivore

Producer

Carnivore HerbivoreHerbivore

Omnivore

Producer

Population Sampling Techniques

• The ecologist go to a area where eagles have been sighted. Count all the ones they see. They break those numbers down to male and female, the females are always larger.

• Describe population sampling techniques used to estimate the size of assigned animal

Stream Quality Data & Analysis

0

5

10

15

20

No. oforganisms

Class IClass IIClass III

• The stream conditions is medium quality. The reason is there are some class 3 organisms.

• Class indictors – A very healthy stream has all class I

with very few class II and no class III.– A medium quality stream as less

class I and more class II and very few class III.

– A bad stream as no class I with some class II and a lot of class III

• The eagle needs a good stream quality stream because it need to see the fish in the stream to swoop down and catch the fish.

• If the streams were class III quality the eagle would have a harder time catch fish.

Water Testing Data & Analysis

• The different levels of the test we did mean many different things. The nitrates and phosphates are not good for plant life. The more DO there is the better quality it generally is. And the pH is just a indictor telling us acidic or base levels.

• The ranges are very important because to much of something or to less can kill everything. For Nitrates and Phosphates you want zero. For pH levels you want a neutral level which is 7. Then for oxygen you want 10 to 15 for a health environment for the wild life to live.

• The bald eagle can survive much longer and a longer health life next to a stream because there are large amount of fish in the streams that they can catch. Next to a marsh or mine water there aren’t as many fish that can survive in these waters.

• The turbidity can affect the prey predator relation and rock will be cover in different materials, which would make harder for them to hold on to the rocks. The temperature affects what water life is present in that section of the stream.

020406080

100120140

Nitrate

Oxygen

pH Phosphates

StreamMarshMine

Soil Testing & Analysis

0

2

4

6

8

10

12

14

pH Potash

Phosphorus

Nitrogen

Riparian

School Site

• Nitrogen is essential to proper functioning of plant metabolism. Phosphorous is the most important nutrient in root formation, creating fibrous root system. Potash stimulates flowering, and is needed in photosynthesis to make sugars. Plants also need the correct pH level, which controls how well plants utilize the nutrients available in your soil.

• The ideal range for pH are within a range of highly acidic of 4 to slightly alkaline at a pH of 7.5 to 8 the ideal range for Nitrogen, Potash, and Phosphorous are medium levels in the soil.

• If the chemical levels go out of the ideal range they can kill of many plants which would then kill the animals.

Positive and Negative Factors

• The stream would provide food for the eagle but the marsh and mines waters will not which would eventually kill the eagles.•If the chemicals are to high they would run into the stream and then kill the fish which the eagles eat.• The things that negatively affect the streams is if the chemicals in the streams are too high or too low. If the pH levels are to high or low can kill organisms off same with the DO levels. The things the positively affect the streams are if chemicals or the pH level are just right. Another thing that positively affects the stream is good DO levels.

Conclusion• If some chemicals are too low they can still kill of the plants and then the organisms.

• The speeds the eagle reaches when it is diving for a fish.

• Other birds that fly along side the eagle.

Works Cited

•http://www.dcnr.state.pa.us/wlhabitat/aquatic/streamqual.aspx

Stream and River Quality TODAY, Pa. DCNR, 5-10-10•http://www.baldeagleinfo.com/ Bald Eagle, Unknown, 5-4-10•http://www.ecy.wa.gov/programs/wq/plants/management/joysmanual/streamph.html

Dpt. of Ecology, Chapter 3 – Streams/ pH in Streams