Sentence:  There have been cooing doves , chattering magpies , thieving jackdaws , a proud peacock , a silly goose , and a harpy eagle - whom I <WSD>was</WSD> silly enough to mate with and who is now busy tearing at my vitals '' . 
Meaning of the word marked with <WSD> tags:  have the quality of being; (copula, used with an adjective or a predicate noun)