Spring Migration

Every spring, a significant part of the Afro-Palearctic migration funnels along the eastern coast of Spain. Birds that have wintered in sub-Saharan Africa cross the Sahara, transit Morocco, enter Europe through the Strait of Gibraltar or via the Balearic Islands, and then follow the Mediterranean coast northward. Valencia sits on this flyway.

The result, during April and May, is a constant stream of migrants passing through coastal scrub, wetlands, mountain passes and agricultural land. On a favourable day — clear sky, light southerly or southeasterly wind — it is possible to encounter dozens of species in a few hours.

What moves and when

Early April

The first arrivals appear in late March, but the pace quickens in early April. Barn Swallow and House Martin are among the first, soon followed by Eurasian Wryneck, Common Redstart and the first Eurasian Hoopoe moving north. Black Kite and Marsh Harrier move in small but steady streams along the coast.

Mid-April to early May

This is the peak window for diversity. European Bee-eater arrives around 15–20 April — the call (a rolling prruip) usually precedes the bird. Eurasian Roller, Red-footed Falcon and Montagu's Harrier move through in variable numbers. Warblers concentrate in coastal scrub: Melodious Warbler, Subalpine Warbler, Orphean Warbler and Spectacled Warbler are all regular, along with the commoner Sylvia species.

Raptors become more prominent: Honey Buzzard passes in large numbers during settled weather, sometimes in groups of several dozen birds riding thermals over the coastal headlands. Short-toed Eagle and Booted Eagle are also common during this period.

Late May

Migration continues later than most birders expect. Spotted Flycatcher, late Pied Flycatcher and Garden Warbler are still moving through in the last week of May. Shorebirds begin their return passage from late May onwards — Curlew Sandpiper and Little Stint appear at Albufera from late May in small numbers.

Best sites along the Valencian coast

• La Albufera and surrounding rice fields — the main staging area for raptors, waders and wetland passerines. On clear mornings, raptors soar over the lagoon in loose streams heading north.
• El Saler pinewood — the strip of coastal pines and scrub between Albufera and the sea traps migrant passerines, particularly after overnight arrivals. Warblers, flycatchers and chats concentrate here.
• Cape Cullera — a headland south of Valencia where migrants concentrate before crossing the coast. Good for raptors and seabirds.
• Pego-Oliva marshes — quieter than Albufera but excellent for Marsh Harrier, Osprey and wading birds during spring passage.

Weather and timing

Migration in spring is weather-dependent. Movement is heaviest during clear anticyclonic conditions with light southerly winds, which assist northbound migrants. After a period of westerly winds or rain, a sudden calm brings a concentration of birds that have been grounded — these fallout days are among the most productive for variety.

Early morning is when migrants are most visible and most active. By mid-morning many have settled into cover, and by early afternoon the heat reduces activity. A 6am start at Albufera during the first two weeks of May, with the right conditions, can produce 80–100 species.