Is there a difference between saying "Are those birds good" and "Are those good birds"? I guess you could make the argument it doesn't make sense to say "Are those ones birds good", but it does makes sense to say "Are those ones good birds?". What do you think?
Since birds are animate, should "hontesse" be b-class? So the sentence would read: "Boni sȳri hontesse issi?"
But also in the tips & notes, it says "Note: It's up to the individual speaker to decide whether animals are animate enough to earn a B-class demonstrative pronoun." so you can choose with animals I guess.
It might be how as in German, some prepositions change their case depending on movement. Since "issi" is a form of the verb to be, it isn't showing any movement, their for "hontesse" are considered k-class in this sentence.