I've observed two different inter-species interactions in my hummingbird watching that seem strange.

First, I have several lively House Wrens active in my yard. One morning, as they appeared to be foraging in our azaleas and dogwood, making their rattling buzz calls back and forth, a female hummer started to dive at them aggressively. She made several passes, then flew away. I've seen no evidence of a hummer nest anywhere nearby, so her behavior is a mystery...

Second, we have a large pop. of English sparrows in our neighborhood, unfortunately. On several occasions, I have seen 1-3 of them fly at a hummer nectaring at my feeder or my near-by native honeysuckle and drive it away. Since the sparrows don't eat nectar, why would they be aggressive towards hummers?

Mary LaMarca
Silver Spring, MD