Tree Swallows are interesting to watch and very, very fast birds. They move quickly, back and forth, up and down, swooping, swerving, and diving. To catch them in a picture is sometimes quite the challenge....lol. On one of our outings, we happened to catch 2 tree swallows flying around and then it began.....for a few seconds.....a battle over something. One of the birds was very upset at the other one :) I find wildlife behaviour very interesting.
Taken with Canon 7D Mark ll & Canon 100-400mm f4-5.6 USM ll @400mm - 1/2500 secs / f5.6 / ISO 320 - 400.