(1) The golden eagle is the largest and arguably the most impressive of British birds.
In the first sentence, we have the adjunct arguably. In case of adjunct arguably we can apply the criteria of deletion. According to this criterion the adjunct can be deleted without any influence on the grammar of the sentence, consider the example:
(1)*The golden eagle is the largest and the most impressive of British birds.
We also have the complement the largest and the most impressive of British birds, which is obligatory. Thus, this complement cannot be deleted, as adjunct, because this complement is required to build grammatically correct sentence together with governing verb is.
(2) Almost all breeding golden eagles …show more content…
For example, almost, can be deleted free, without changing grammar and meaning of the sentence itself. In case of adjunct in Britain, we can apply several criteria like: deletion and change position, as adjuncts have position mobility.
(2)* In Britain, all breeding golden eagles are in Scotland, where the birds find the surroundings they prefer/All breeding golden eagles are in Scotland, where the birds find the surroundings they prefer.
However, we have some interesting cases like in Scotland, where the birds find the surroundings they prefer. The form of this complement does not depend on the governing verb and thus it is carried out as wh-clause. In this case, this complement shares the formal properties of adjuncts and it is possible to assume it to be adjunct.
(3) Often they can be seen from up to a mile away, and the impression always is of sheer size, power and …show more content…
(6) Golden eagles are sensitive to human disturbance and build their nests in remote, inaccessible places.
In case (6) to distinguish whether human disturbance is complement or adjunct, we will use the criteria of question of form and have the following:
(6a) What golden eagles are sensitive to?
This question form indicates a complement status for human disturbance, and thus item -specific.
In case of their nests – we can say that this element is obligatory compliment. This element relates to the governing verb build and together they form the grammar of the sentence.
Considering in remote, inaccessible places, we can suppose this element to be contextually optional complement. This compliment is only optional when the referent is clear from the context
(7) Golden eagles in Scotland do not migrate and will remain in their breeding territories throughout the year.
(8) Young and non- breeding birds avoid occupied territories in their search for suitable breeding