Yellow-rumped Warbler and other Sightings at the Charles River

I took a walk at the Charles River Sunday and had quite a few exciting spring sightings. The first of which as a yellow-rumped warbler. I spent some time up close to it on the bank of the river. I took a lot of pictures but need to perfect my craft since I only ended up with one good shot:

I was also excited because I was able to locate the songbird that I recognize from the beach at the Cape. I spent some time listening to it and attempting to photograph it at the very top of a tree. Here are my best attempts. Based on what I can see in the photo, but mostly thanks to its call I think it's a Savannah Sparrow.

Another familiar bird I was able to stop and capture was a Red-winged Blackbird- a regular at the River:

I also spent some time photographing a pair of Song Sparrows (?). Sparrows can be tricky though- I spent a lot of time with my guidebook and this was my best guess.

I also followed the call of a Northern Flicker and got these pictures from far away:

It was such a beautiful day and I'm so glad I got down to the river for a walk. I'm also glad I had my camera with me and spent some time really trying to identify the various calls- all of which were familiar to me. It's really important to start matching up the calls I've heard my whole life with the birds I'm used to seeing but in a different context where they're not singing- at a feeder for example.