Yes, the adverb clause "although the ostrich is a bird" would be followed by a comma.
In the phrase "Although the ostrich is a bird," the word "although" functions as a subordinating conjunction, not an adverb or adjective. It introduces a dependent clause that contrasts with or adds information to another statement. The main subject of the clause is "the ostrich," and "is a bird" serves as the predicate.
The subordinate clause of the sentence is -- Although the ostrich is a bird
The adverb clause typically modifies the verb in the sentence.
The underlined clause "when the race began" is an adverb clause modifying the adverb "novanent" in the sentence: "The runners increased their speed when the race began."
An adverb clause is introduced by a subordinating conjunction such as "because," "when," "if," "although," or "since." It functions as an adverb in a sentence, providing information about time, reason, condition, manner, or place.
The sentence containing the adverb clause that modifies an adverb is: "Although Denmark is located far to the north, Madagascar, where 90% of the known species of lemur live, is the world's fourth largest island." In this case, the adverb clause "Although Denmark is located far to the north" modifies the context of the main clause by providing a contrast.
Although the roads were icy, he drove his car last night.
A sentence with an adverb or adjective clause is a complex sentence, because an adjective clause is a subordinate clause. A complex sentence must contain one independent clause plus one or more subordinate clauses.
A sentence with an adverb or adjective clause is a complex sentence, because an adjective clause is a subordinate clause. A complex sentence must contain one independent clause plus one or more subordinate clauses.
An adverb clause can provide information about when, where, why, how, or to what extent an action is taking place within a sentence.
An embedded clause is not an adverb. It is a type of subordinate clause that is embedded within a main clause and functions as a noun, adjective, or adverb within the sentence.
The adverb clause is "when the moon is full." The subordinating conjunction is when, the subject is moon, and the verb is "is."