Is there anymore adverbs that I am leaving out?

There aren't. You have found all the adverbs in the passage:

1. slowly

2. quietly

3. beautifully

4. loudly

Explanation:

An adverb is a word that modifies a verb, an adjective or another adverb. It is common for adverbs to have -ly at their endings, but that will not necessarily be the case with all of them. Some examples of adverbs are: well, quickly, early, sweetly, etc.

Let's focus now on the adverbs found in the passage and the words they are modifying:

1. slowly --> modifies the verb "walked"

2. quietly --> modifies the verb "moved"

3. beautifully --> modifies the verb "playing"

4. loudly --> modifies the verb "playing" in a different sentence

the meaning of the word broods in verb form is a family of animals used in section 2