VUVulnerable

Large Tree-finch

Geospiza psittacula

Declining

Overview

A detailed profile for this species is sourced from the IUCN Red List of Threatened Species as assessments become available.

The Large Tree Finch faces severe pressure from introduced parasites, particularly the avian vampire fly Philornis downsi, whose larvae infest nestlings and cause high mortality rates. Habitat degradation from invasive plant species like blackberry and guava has altered the native Scalesia forest structure, reducing suitable nesting sites and food availability. Climate change poses an additional threat by shifting vegetation zones upward, potentially reducing the highland forest habitat this species depends upon.
Threat summary

Habitat

Forest· major

Conservation measures underway

Species recovery

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Frequently asked questions

Why is Large Tree-finch classified as Vulnerable?

Large Tree-finch is classified as Vulnerable because the population is declining and the species faces a high risk of extinction in the medium-term future if current pressures continue. The Large Tree Finch faces severe pressure from introduced parasites, particularly the avian vampire fly Philornis downsi, whose larvae infest nestlings and cause high mortality rates. Habitat degradation from invasive plant species like blackberry and guava has altered the native Scalesia forest structure, reducing suitable nesting sites and food availability. Climate change poses an additional threat by shifting vegetation zones upward, potentially reducing the highland forest habitat this species depends upon.

Where does Large Tree-finch live?

Large Tree-finch occurs in Ecuador. Country-level distribution data is sourced from the IUCN Red List and cross-referenced with GBIF occurrences.

What are the main threats to Large Tree-finch?

The main threats to Large Tree-finch are 11.1, and 8.1. The full IUCN-classified threat record for this species is detailed on the species page.

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