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Spring Migration on the Eastern Shore: What Arrives and When
Alabama has more than 430 documented bird species, and a large share of them are only here in passing. The Eastern Shore of Mobile Bay sits directly under one of the busiest migration routes in North America, which is why a wooded shoreline of this size holds far more birds in April than its acreage suggests.
Why this shore, specifically
Many neotropical migrants cross the Gulf of Mexico in a single flight — six hundred miles of open water, roughly eighteen hours, no stopping.
Birds that make that crossing arrive on the northern Gulf Coast with their fat reserves spent. The first substantial woodland they reach is where they land. On a good day the trees fill with warblers, tanagers, buntings, thrushes and orioles feeding almost continuously, often at eye level, often indifferent to people standing nearby.
That behaviour is not tameness. It's exhaustion, and it's the reason spring migration on this coast produces views that are difficult to get anywhere else.
The rough calendar
Dates shift with weather, so treat this as a shape rather than a schedule.
Late February into March. The first movement. Purple martins arrive early and are watched for locally as a marker that the season has turned. Early swallows, some warblers.
Late March through mid-April. Volume builds. Warblers in growing variety, vireos, thrushes, orioles.
Mid-April into early May. The peak. This is the window when a single morning can produce twenty or more warbler species along a short stretch of woodland.
Mid-May. Tapering. The late movers pass through, and by the end of the month the woods sound like summer again.
What weather does to a morning
The single most useful thing to understand about spring birding on this coast: a bad day for the birds is a good day for the birder.
Migrants crossing the Gulf with a following southerly wind can overfly the coast entirely and continue inland before landing. On those mornings the shoreline woods can be surprisingly quiet.
When a front moves through and birds meet a headwind or rain over the water, they come down at the first land they reach. That produces what birders call a fallout — large numbers of tired birds concentrated in coastal woodland. Fallouts are unpredictable, occasionally spectacular, and the reason experienced local birders watch the forecast more closely than the calendar.
Look for a front passing in April, and go the following morning.
How to see more
Go early. Activity peaks in the first two or three hours after sunrise and drops sharply by mid-morning.
Move slowly and stop often. Most people walk past more birds than they see. Standing still for ten minutes in one good spot generally beats covering a mile.
Listen before you look. In spring, most birds are heard first. Learning even six or eight common songs changes the experience completely.
Watch the edges. Where woodland meets open ground, and where sunlight reaches the lower canopy, insects concentrate — and so do the birds feeding on them.
Look up, but not only up. Exhausted migrants feed low. Some of the best views come at chest height.
What you'll need
Binoculars matter more than anything else, and modest ones used well beat expensive ones used occasionally. A field guide or a phone app for identification. Insect repellent from April onward, without exception on this coast.
Patience is the actual requirement. Migration rewards people who stay in one place longer than feels natural.
Recording what you see
Submitting sightings to eBird takes a few minutes and turns a morning's birding into data that researchers use. For a small preserve, an accumulating public species list is also one of the more persuasive arguments for its own protection.
Species recorded at the preserve and the current checklist: [FILL: link or list]