Using the example of the albatross and the fulmar, explain two special adaptations that have developed to help seabirds find food.
1. Today, I want to talk about sea birds.
2. Now sea birds hunt and eat fish and well, their food can be hard to find because their food sources spread out over a large expanse of water.
3. So what sea birds have done is that over time they've mad e adaptation.
4. They've developed special characteristics that help them find food.
5. One adaptation involves the length of the birds' wings.
6. The albatross, for example, is a large sea bird that spends most its life flying over ocean water in search of food- fish to feed itself and to carry back to the nest to feed its chicks.
7. Now most birds flap their wings up and down when they fly, which sues up a lot of energy.
8. But the albatross has these special long wings that it can hold perfectly still.
9. It's able to fly without moving its wings up and down.
10. These long wings allow it to glide or float on the wind and this uses very little energy.
11. This is important because as I said, the albatross has to cover a huge expanse of ocean to locate food, sometimes up to 11000 miles a day.
12. Because of its long wings, it can glide along over the ocean using little energy as it searches for food.
13. Another important adaptation of many sea birds is an acute highly developed sense of smell.
14. Take the fulmar, like the albatross, the fulmar needs to find food that's scattered far out over the ocean.
15. But the fulmar has a rather unusual advantage.
16. It has tiny tubes inside the nose holes in its beak and these special tube-shaped nostrils help it to pick up the scent of food.
17. Now this highly developed sense of smell is especially important because the fulmar's main sources of food, plankton, are tiny organisms that are hard to see.
18. But they give off a very sharp distinctive odor.
19. So when fulmars are flying around looking for food, they may not be able to see them but they can find the plankton by smelling them, even from far away.
| Post dates | Users | rates | Contents |
|---|---|---|---|
| 2019-11-03 | adsdfdssd | 68.00 | Check this speaking |
| 2018-07-09 | Elena Cristina | 88.00 | Check this speaking |
| 2019-10-12 | Seema Modak | 90.00 | Check this speaking |
| 2018-10-07 | chandr | 90.00 | Check this speaking |
| 2019-11-22 | Seema Modak | 66.00 | Check this speaking |
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Attributes: Values AverageValues Percentages(Values/AverageValues)% => Comments
Performance on vocabulary words:
No of characters: 492.0 578.828451883 85% => Need more words or more difficult words.
No of words: 132.0 151.265690377 87% => More words wanted. You may: choose simpler words or speak faster or remove hesitations or remove long pauses, and fully use the time, do NOT save one or two seconds.
Chars per words: 3.72727272727 3.82278263415 98% => OK
Fourth root words length: 3.38956122427 3.50058242952 97% => OK
Word Length SD: 1.92310870921 1.80425224433 107% => OK
Unique words: 86.0 92.4686192469 93% => More unique words wanted.
Unique words percentage: 0.651515151515 0.61298525976 106% => OK
Syllable count: 161.1 182.283891213 88% => OK
Avg_syllables_per_word: 1.2 1.20543933054 100% => OK
Performance on coherence:
Topic speech coherence ratio: 0.0892486508925 0.0839705835288 106% => OK
Acoustic performance on paragraphs:
How many acoustic paragraphs: 1.0 4.47071129707 22% => Need more acoustic paragraphs.
Average paragraph length: 132.0 65.8948926009 200% => The average paragraph length is high.
STD paragraph length: 0.0 19.7758100068 0% => OK
Average paragraph duration: 44.57 25.5208953607 175% => OK
STD paragraph duration: 0.0 7.49434385956 0% => The duration of acoustic paragraphs keeps same.
Acoustic performance on sentences:
How many acoustic sentences: 21.0 42.9832635983 49% => Need more acoustic sentences. Maybe the speech rate is too fast.
Average acoustic sentence length: 6.28571428571 3.78147595546 166% => OK
STD acoustic sentence length: 4.09579176767 2.94285465224 139% => OK
Average acoustic sentences duration: 2.08380952381 1.39386743896 149% => OK
STD acoustic sentences duration: 1.20644095307 0.967747756167 125% => OK
Acoustic performance on acoustic silence:(An acoustic silence means a little pause between two or more words)
How many acoustic silence: 22.0 40.4456066946 54% => OK
Total acoustic silence duration: 4.81 7.59280334728 63% => OK
Average acoustic silence duration: 0.218636363636 0.19053887516 115% => OK
STD acoustic silence duration: 0.107926551394 0.157467062838 69% => OK
Acoustic performance on acoustic words:
Total word duration: 37.68 46.3453556485 81% => Need to talk more.
Average word duration: 0.285454545455 0.308780311121 92% => OK
STD word duration: 0.160931773782 0.201157623399 80% => OK
Disfluencies: like hesitations, or 'ehn' or taking a long time to pronounce a word:
How many disfluencies: 6.0 8.09623430962 74% => OK
Total_disfluencies_duration: 4.32 6.56692468619 66% => OK
Total acoustic noise duration: 0.53 3.53066945607 15% => Good job. The lower, the better.
Acoustic rates:
Total speech duration: 44.57 59.5455230126 75% => Talk more. Do not save time. People can talk 4-5 words in one second.
Compare to expected duration: 0.742833333333 0.992425383543 75% => Some seconds left. Need to talk more.
Rate of silence: 0.493605564281 0.681803438845 72% => OK
Rate of speech: 2.96163338569 2.53813033465 117% => OK
Rate of speech by unique words: 1.92954902401 1.55221717717 124% => OK
Rate of word duration by unique words: 2.28237791932 1.99939622689 114% => OK
Average articulation rates: 0.322732386364 0.309613076454 104% => OK
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Rates: 70.0 out of 100
Scores by speech e-grader: 21.0 Out of 30
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Note: the speech e-grader does NOT examine the meaning of words and ideas.