Every spring when the great flood of migrating birds returns, they feast on the great flood of insects and other cold-blooded vertebrates returning at the same time. Let's look at some of the tiny critters that are emerging, and see what kinds of birds eat them.
Earthworms and Insects on the GroundRobins are adapted to notice earthworms in their underground burrows, and pig out on them starting as soon as the ground thaws.
Caterpillars That Munch on Trees
Rose-breasted Grosbeaks, Scarlet Tanagers, many kinds of warblers, and other "canopy" birds feed on caterpillars that eat the leaves of trees. As soon as the tiny insects hatch, they begin feeding on the tiny soft leaves first opening up, and migrating birds arrive just in time for dinner!
Rose-breasted Grosbeaks, Scarlet Tanagers, many kinds of warblers, and other "canopy" birds feed on caterpillars that eat the leaves of trees. As soon as the tiny insects hatch, they begin feeding on the tiny soft leaves first opening up, and migrating birds arrive just in time for dinner!
Scarlet Tanagers feed on insects in leafy trees, especially oaks.
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Cape May Warblers thrive on the budworms that sometimes infest spruce trees.
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Connecticut Warblers take a lot of their insects in the low branches of trees. They forage in dark, dense vegetation.
They walk along the leaf litter and fallen branches and logs, usually around a swamp or equivalent, picking off invertebrates |
Cerulean Warblers like this one are becoming rarer and rarer over most of their range in the eastern states, barely up to Canada. They eat insects in the very tops of trees.
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Flying Insects
Swallows, swifts, nighthawks, flycatchers, some warblers, and Cedar Waxwings snap up insects flying in the air. Swallows, swifts, and nighthawks fly for hours at a time, snapping up insects on the wing. Flycatchers, warblers, and waxwings flutter out from a branch when they spot a succulent insect, and snap it up!
Swallows, swifts, nighthawks, flycatchers, some warblers, and Cedar Waxwings snap up insects flying in the air. Swallows, swifts, and nighthawks fly for hours at a time, snapping up insects on the wing. Flycatchers, warblers, and waxwings flutter out from a branch when they spot a succulent insect, and snap it up!
Aquatic insects and other tiny swimming invertebrates
Ducks, some shorebirds, kingfishers, and sometimes even crows, robins, and other songbirds pick at aquatic insects. Ducks can get them in deeper water than songbirds can, swimming underwater or dabbling in one spot to grab them. Shorebirds walk in the shallow water picking at them. Kingfishers fly above the water and suddenly snap their beaks to grab tiny fish and larger insects near the surface. Songbirds walk along the shore picking up insects that are pushed toward shore with the waves.
Ducks, some shorebirds, kingfishers, and sometimes even crows, robins, and other songbirds pick at aquatic insects. Ducks can get them in deeper water than songbirds can, swimming underwater or dabbling in one spot to grab them. Shorebirds walk in the shallow water picking at them. Kingfishers fly above the water and suddenly snap their beaks to grab tiny fish and larger insects near the surface. Songbirds walk along the shore picking up insects that are pushed toward shore with the waves.
Tiny Insects
Hummingbirds get their protein by picking tiny aphids and other chewing insects from the surfaces of flowers and leaves, and by snapping up very tiny flying insects like gnats out of midair. Some people feed hummingbirds and small fly-catching birds by setting out chunks of banana and melon in a small mesh bag. Hummingbirds zip this way and that snapping up the tiny fruit flies that swarm about this kind of fruit.
Hummingbirds get their protein by picking tiny aphids and other chewing insects from the surfaces of flowers and leaves, and by snapping up very tiny flying insects like gnats out of midair. Some people feed hummingbirds and small fly-catching birds by setting out chunks of banana and melon in a small mesh bag. Hummingbirds zip this way and that snapping up the tiny fruit flies that swarm about this kind of fruit.
This tiny Ruby-throated Hummingbird can chase tiny insects in mid air, or can slurp them up with its long tongue when it sees them on flowers or leaves.
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Crawling Insects and Weed InsectsMany birds feed on the big caterpillars, beetles, grubs, and other medium and large insects and spiders they find near the ground. Blackbirds, bluebirds, sparrows, crows, wrens, and other birds get a lot of protein by hunting out these bugs.
Insects in the Crevices of TreesChickadees, nuthatches, creepers, woodpeckers, and the Black-and-white Warbler find insect eggs, larvae, or pupae in the crevices of tree bark. Woodpeckers can hear bugs chewing within the wood, and dig them out!
Generalists: Birds That Eat Many Kinds of InsectsSome birds can eat a wider variety of insects than others. These are called generalists. One example is the Yellow-rumped Warbler.