Willow Warbler (Phylloscopus trochilus) is a small, insectivorous bird belonging to the leaf warbler family. Commonly observed during migratory periods within the Comunidad Valenciana, this bird is a delight for bird watchers and nature enthusiasts alike.

Key characteristics of the Willow Warbler include:

• Appearance: The Willow Warbler features a slender build with olive-green upperparts and pale underparts. Its legs are typically brownish, and it has a distinct, long supercilium (eyebrow line) that stands out against its face.
• Size: This bird measures approximately 11 to 12.5 cm in length, with a wingspan ranging from 17 to 22 cm.
• Diet: As a primarily insectivorous species, its diet consists of a variety of insects and other small invertebrates, although it may occasionally consume berries, especially during migration.
• Habitat: The Willow Warbler is often found in woodlands, gardens, and scrub areas, where its song can be heard during breeding season.
• Migration: This species is migratory, breeding in Northern and Central Europe, and then moving to sub-Saharan Africa for the winter. The Comunidad Valenciana serves as a passage for these birds during spring and autumn migrations.

The Willow Warbler is known locally in some areas as the Mosquitero Musical due to its melodious and sweet song, which is a key attraction for those studying and appreciating the region's diverse avian population.