Mistletoe Tyrannulet

Zimmerius parvus

Small, drab tyrannulet found in the lowlands from eastern Guatemala and Belize south to extreme northwestern Colombia. Fairly inconspicuous; usually found as singles or pairs in middle to upper levels of forests, plantations, and second-growth. Typically perches fairly horizontally with the tail held slightly cocked. Feeds mainly on berries. Note the dull whitish eyebrow, small bill, and bright yellow edging on wing feathers.

Identification

The mistletoe tyrannulet is a small bird, 11 – 12 cm in length as an adult. Adults have a slaty cap, a bright white supercilium ("eyebrow"), an olive-green back and conspicuous yellow edging along the wing.

Taxonomy

The mistletoe tyrannulet was described in 1862 by the American amateur ornithologist George Newbold Lawrence under the binomial name Tyranniscus parvus. It was formerly considered to be conspecific with the Guatemalan tyrannulet (Zimmerius vilissimus), but the species were split based on a molecular phylogenetic study published in 2013.

Scientific name
Zimmerius parvus
Authority
(Lawrence, 1862)
Order
Passeriformes
Family
Tyrannidae
Genus
Zimmerius

Range and habitat

The mistletoe tyrannulet ranges from Guatemala and Honduras south to the extremity of northwestern Colombia. It can be found in humid evergreen forest and edge, cultivation and semi-open areas with large trees. It is a fairly common to common bird across its range.<p>This species is a very frequent caller, incessantly giving a call that has been rendered variously as peeyaik, pee-peeu or pee-yuip and sounds similar to that of the thick-billed euphonia (Euphonia laniirostris), another mistletoe-loving species.

Migration
Vertical migration

Behavior

The mistletoe tyrannulet's nest is a globular mass of rootlets, mosses and other plant matter, hidden in a tangle or growth or in an epiphyte. The clutch is two whitish eggs, speckled rusty.<p>The mistletoe tyrannulet is an active forager, moving quickly about with its tail cocked as it searches for prey, mainly arthropods, amidst the foliage. It can be found as a member of a mixed-species feeding flock. The bird also takes fruit, preferentially that of mistletoes (order Santalales).

Conservation

Population trend
declining

Photos

Distribution

Bird Calls

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