Mountain Elaenia

How to find it

Head for open woodland and forest edges in the highlands. Scan fruiting trees in particular, since fruit makes up more of its diet than is usual for elaenias and birds may gather there. Listen early for the repeated three-note dawn phrase and for the drawn-out peeeur call. Because elaenias are hard to separate by sight, voice is usually the best way to confirm the species. Since it moves with the seasons, a spot where it is absent on one visit may hold it at another time.

How to recognise it

This is a small tyrant flycatcher with a rounded head and no colored patch on the crown. Across its range it is about 15 cm long and weighs up to 20 g.

Look for these marks together:

- dull olive upperparts

- a white eye ring

- a smooth, rounded head

- no crest

In Costa Rica the useful comparison is the Yellow-bellied Elaenia, which is slightly more yellow below and has a larger, bushier crest. The Mountain Elaenia has no crest at all, so a plain round head is the feature to check. The marks are modest, and noticing what is missing, a crest or a bright crown, is part of the identification.

What it sounds like

Recording: Grete Pasch, CC BY 4.0, source, read 4 Nov 2026.

Behaviour and diet

The Mountain Elaenia is not very social. It may gather at fruiting trees, where it can act aggressively toward others of its own species.

In areas where it moves seasonally it apparently does not keep the same mate all year. Breeding in Costa Rica runs from early April to June at least. The nest is an open cup of twigs, moss and lichen, and the 18 nests measured sat 2 to 15 m above ground.

Where it lives

In Costa Rica this is a bird of the mountains, and its range runs from southern Nicaragua to western Panama. It favors open woodland and forest edges in the highlands.

Across its wider range it breeds in high-elevation forests. Listed habitats include moist montane forest, moist lowland forest, farmland, pasture and heavily degraded former forest. Because it likes open woodland, it tolerates some urbanization and also occurs in suburban habitats.

In Costa Rica it appears to move up and down the mountains with the seasons, while further north in Central America it is thought to stay in one place all year.

When to see it

This resident species moves up and down mountains, so in some areas it can be common for some months and absent in others.

Similar birds

The Yellow-bellied Elaenia is the usual lookalike. It is slightly more yellow below, has a larger, bushier crest, and lives in degraded and secondary forest and lowlands, up to about 1,800 m. The Lesser Elaenia is another similar species, a bit smaller and less crested than the Yellow-bellied, and best told by voice.

Names and lore in Costa Rica

Costa Ricans call it Elainia Montañera, with Tontillo and Bobillo also given on the AOCR list. Other Spanish names for the species include Fiofío montano and Mosquero Elenia de Montaña. Elenia montañera is the form used in Colombia, Nicaragua and Panama.

Status and conservation

The AOCR list marks it as a resident (R), it is treated as common in Costa Rica, and the IUCN rates it Least Concern.

Photography tips

Fruiting trees at highland forest edges are the best places to wait, since birds may gather there. Learn the song first, because it is an inconspicuous bird and the voice will tell you where to point the lens.