Many songbirds eat arthropods. Only a few of these are named for their eating habits, but the tyrant flycatchers are. Members of this family often hunt from a perch, fly out and capture an insect in the air and then return to the perch. However, they also glean insects and spiders from the trees.
The first picture is of the title’s and. Although not in the flycatcher family, this Grey Catbird was hunting for insects alongside flycatchers. Its strange cat-like mewing (from which it gets its name) alerted me. The bird’s preference for skulking through thick brush meant that it took me some time to obtain a clear view of it calling.
Not all family members have flycatcher in their names, but this one, the Pacific-slope Flycatcher, does. This bird was near its nest in a carport. Field guides tell you that it is a cavity nester, but around here, many prefer human structures to provide a covering for the nest. 
I am fascinated by the number birds that are partial to building nests on human structures, but then complain vociferously about the inevitable presence of those humans. While I try to avoid their nests, it is chastening to be vilified by a robin for using one’s own doorway. The Pacific-slope Flycatcher, below, became stroppy when a human dared to use the carport it had appropriated.
Another case of an and. A Tree Swallow also catches insects in the air.
Although a member of the family, the Eastern Kingbird does not have flycatcher in its name. This one is an adult: note the white-tipped tail. 
This kingbird is about to fly off, presumably to catch an insect.
Useful resources
As I attempt to use images from my camera to help me make sense of my surroundings, I have relied upon many books (ranging over topics such as birds, meteorological optics and dragonflies) and upon many websites (examples being Wikipedia and All about birds).
Some recently developed resources look really appealing.
Map of Life
This draws upon about 200 data sets covering nearly a million species all presented though a searchable map. You can either plot the geographic range of a species, or you can pick a location and explore the various species found there. It appears to remain under development as the types of species available in the two sections differ. The datasets can be explored using either:
• An app for use on a mobile device https://auth.mol.org/mobile
• A website for use on a computer http://map.mol.org/lists
The name, Merlin, is clever in that it is both the name of a bird and a legendary magician. Oddly, the app’s logo shows a Yellow-bellied Sapsucker (the lab’s logo), rather than a merlin.
Merlin
This interesting routine actually helps you identify birds you have photographed, but two different technique are used. The app uses a bit of textual information you supply (bird size, colours, location, date) to give a list of plausible candidates. On the website, a picture is uploaded and is then marked with the location of the bird, and its bill, eye and tail. The website then uses image analysis to suggest the species.
• An app for use on a mobile device http://merlin.allaboutbirds.org
• A website for use on a computer http://merlin.allaboutbirds.org/photo-id/
For months now, I have made effective use of the Merlin app to narrow the possible identification of unknown birds. However, the image analysis performed by the website is even more interesting. In my limited testing, it does superbly with a standard bird-profile shot, but stuggles with an unconventional view, such a bird flying directly towards the camera.