Cape May Warbler vs. Philadelphia Vireo (1 Viewer)

We have oranges, grape jelly and sugar water out for Northern Orioles, and the orioles have been especially plentiful this year. (Our backyard is in the north central U.S.)

Two days ago a pair of Philadelphia Vireos started visiting the oranges. We have never seen this before in 30 years of birding. But then a pair of Cape May Warblers did the same. Again, we have never seen this before.

And then one of the Cape Mays started guarding the oranges and chasing the vireos and orioles off of the oranges.

Has anybody seen any of these things before?

I have not. Interesting!

Seen Cape May that were passing through, get defensive in my mulberry tree
and literally run off a Prothonotary female, that was nesting near by.
Few days later, Cape May was gone, and the Prothonotary back, taking both fruit and insects.
Welcome to the Forum, Sunnyday