The toucan-a brightly marked bird of the tropics of the Americas --has long amazed people with its large, colorful bill. A third of the bird's entire length, the bill is longer than that of any other bird and is strikingly colored. Scientists have debated the question of why the toucan evolved such a bill. At least three theories have been proposed.
First. the toucan's bill is long and has sawlike edges, making it a potentially formidable weapon against predators. By jabbing with its bill, the toucan could deal a considerable blow to any animal trying to attack it. The sharp edges on the inside portion of its bill could also inflict damage if the toucan tried to fight off an enemy that had attacked it.
Second, the bill's shape and color could help the toucan hide in its tropical habitat by confusing potential predators. In the dim light of a dense tropical forest, a toucan's bill could easily be mistaken for a eaf or a piece of fruit. This illusion, in conjunction with the bird's brightly colored feathers that look like vegetation striped by shade and light, could provide truly effective camouflage protection.
Third, the toucan's bill could have evolved to help the bird coo itself by providing a large surface area through which excess heat can escape quickly. It is difficult for birds to lose heat through their bodies, since they are covered with insulating feathers. However, a toucan can effectively lose heat by pumping blood into its bill; from there the heat can easily radiate out. In a hot, tropical environment, it is important for birds to regulate their internal temperatures and prevent overheating.
Word Count: 264
According to the reading passage, Some theories have been proposed among scientists to explain the exsistance of huge and colorful bill in toucans. However, The professor in the listening part states that these hypothesis can be questionable to some extent and refutes them by describing three reasons as follows.
First of all, the reading claims that the long an edgey bill of toucan can provide it a protection over predators, and it can use the bill as a weapon. The professor casts doubt on this point by mentioning that the bill cannot function as weapon because it is too light and can be damaged while attacking. Additionally, he mentiones that the lightness of bill is logical because otherwise toucan would not be able to fly easily.
Secondly, the article posits that since the bill's color is close to the color of a fruit or a vegetation, it can help the toucan to camouflage amoung tropical herds. In contrast, the professor says that this assumption cannot be true for the fact that while hideing among fruits, some animals may consider them as a source of food and eat them. Hence, blending its color with vegetation will not bring a protection for the toucan.
Finally. the reading says that the long bill can help toucan to cool down its tempratur by pomping the blood to the bill. On the other hand, the professor opposes this idea by mentioning that if the bill functionede as a cooler, the animal would loose its protection in freezing hours. Therefore, the bil will put the animal into a predicament.
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Grammar and spelling errors:
Line 1, column 206, Rule ID: THIS_NNS[2]
Message: Did you mean 'this hypothesis' or 'these hypotheses', 'these hypothesises'?
Suggestion: this hypothesis; these hypotheses; these hypothesises
...essor in the listening part states that these hypothesis can be questionable to some extent and ...
^^^^^^^^^^^^^^^^
Line 4, column 1, Rule ID: SENT_START_CONJUNCTIVE_LINKING_ADVERB_COMMA[1]
Message: Did you forget a comma after a conjunctive/linking adverb?
Suggestion: Finally,
...ot bring a protection for the toucan. Finally. the reading says that the long bill ca...
^^^^^^^
Line 4, column 10, Rule ID: UPPERCASE_SENTENCE_START
Message: This sentence does not start with an uppercase letter
Suggestion: The
...a protection for the toucan. Finally. the reading says that the long bill can hel...
^^^
Line 4, column 247, Rule ID: LOOSE_LOSE[2]
Message: Did you mean 'lose' (= miss, waste, suffer the loss etc.)?
Suggestion: lose
...nctionede as a cooler, the animal would loose its protection in freezing hours. There...
^^^^^
Transition Words or Phrases used:
finally, first, hence, however, if, may, second, secondly, so, therefore, while, in contrast, first of all, on the other hand
Attributes: Values AverageValues Percentages(Values/AverageValues)% => Comments
Performance on Part of Speech:
To be verbs : 8.0 10.4613686534 76% => OK
Auxiliary verbs: 13.0 5.04856512141 257% => Less auxiliary verb wanted.
Conjunction : 6.0 7.30242825607 82% => OK
Relative clauses : 9.0 12.0772626932 75% => More relative clauses wanted.
Pronoun: 24.0 22.412803532 107% => OK
Preposition: 31.0 30.3222958057 102% => OK
Nominalization: 9.0 5.01324503311 180% => OK
Performance on vocabulary words:
No of characters: 1262.0 1373.03311258 92% => OK
No of words: 263.0 270.72406181 97% => OK
Chars per words: 4.79847908745 5.08290768461 94% => OK
Fourth root words length: 4.02706775958 4.04702891845 100% => OK
Word Length SD: 2.60575865525 2.5805825403 101% => OK
Unique words: 144.0 145.348785872 99% => OK
Unique words percentage: 0.54752851711 0.540411800872 101% => OK
syllable_count: 383.4 419.366225166 91% => OK
avg_syllables_per_word: 1.5 1.55342163355 97% => OK
A sentence (or a clause, phrase) starts by:
Pronoun: 2.0 3.25607064018 61% => OK
Article: 9.0 8.23620309051 109% => OK
Subordination: 0.0 1.25165562914 0% => More adverbial clause wanted.
Conjunction: 1.0 1.51434878587 66% => OK
Preposition: 3.0 2.5761589404 116% => OK
Performance on sentences:
How many sentences: 11.0 13.0662251656 84% => Need more sentences. Double check the format of sentences, make sure there is a space between two sentences, or have enough periods. And also check the lengths of sentences, maybe they are too long.
Sentence length: 23.0 21.2450331126 108% => OK
Sentence length SD: 36.0128535364 49.2860985944 73% => OK
Chars per sentence: 114.727272727 110.228320801 104% => OK
Words per sentence: 23.9090909091 21.698381199 110% => OK
Discourse Markers: 11.3636363636 7.06452816374 161% => OK
Paragraphs: 4.0 4.09492273731 98% => OK
Language errors: 4.0 4.19205298013 95% => OK
Sentences with positive sentiment : 5.0 4.33554083885 115% => OK
Sentences with negative sentiment : 4.0 4.45695364238 90% => OK
Sentences with neutral sentiment: 2.0 4.27373068433 47% => OK
What are sentences with positive/Negative/neutral sentiment?
Coherence and Cohesion:
Essay topic to essay body coherence: 0.203387090308 0.272083759551 75% => OK
Sentence topic coherence: 0.085014025065 0.0996497079465 85% => OK
Sentence topic coherence SD: 0.0647681696103 0.0662205650399 98% => OK
Paragraph topic coherence: 0.125491601727 0.162205337803 77% => OK
Paragraph topic coherence SD: 0.0266160787121 0.0443174109184 60% => OK
Essay readability:
automated_readability_index: 13.1 13.3589403974 98% => OK
flesch_reading_ease: 56.59 53.8541721854 105% => OK
smog_index: 3.1 5.55761589404 56% => Smog_index is low.
flesch_kincaid_grade: 11.1 11.0289183223 101% => OK
coleman_liau_index: 10.86 12.2367328918 89% => OK
dale_chall_readability_score: 8.2 8.42419426049 97% => OK
difficult_words: 57.0 63.6247240618 90% => OK
linsear_write_formula: 13.0 10.7273730684 121% => OK
gunning_fog: 11.2 10.498013245 107% => OK
text_standard: 11.0 11.2008830022 98% => OK
What are above readability scores?
---------------------
Rates: 83 out of 100
Scores by essay e-grader: 25 Out of 30
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Note: the e-grader does NOT examine the meaning of words and ideas. VIP users will receive further evaluations by advanced module of e-grader and human graders.