Yellow-rumped Warbler

Yellow-rumped warbler gathering a berry meal at Lake Kittamanqundi on October 30, 2018. We have many migrating warblers that pass through in the spring and fall. I tend to have trouble identifying most types of warblers but the yellow-rumped warblers are easy. The yellow on the back by their tail has also given them the nickname "butter butt" in the birding community.

I have been spending more time practicing getting the smaller (non-heron) birds recently. My camera does not have a built-in autofocus motor and my lens is good but not as fast as I would like (or need) to get the proper focus on smaller birds that move around a lot. I still get reasonable shots like these but most of the time they move too fast or are out-of-focus.

Lens - Tamron 100-400mm f/4.5-6.3 Di VC USD @ 400m on Nikon D5500