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The large tree finch is the biggest of the three Galapagos tree finches, with a heavy, curved, almost parrot-like beak. It uses that powerful bill to tear bark and twist apart twigs in search of insects — nearly woodpecker-style, but with no tool. Here is what it is, what it eats, and where to see it.
Large tree finch at a glance
- Scientific name: Camarhynchus psittacula (“little parrot”)
- Size: the largest and heaviest tree finch, about 18 g
- Beak: heavy, curved and parrot-like
- Diet: insects and larvae prised from bark, plus buds and fruit
- Males: develop a black hood
- Where: humid forest and woodland on several islands
What is it?
The large tree finch (Camarhynchus psittacula) is an endemic Darwin’s finch and at about 13 cm (5 in) and 18 g, the largest, heaviest-bodied of the three tree-finches, at around 18 grams. Its bill is medium-long, heavy and strongly curved on both edges, roughly as long as it is deep — the parrot-like shape behind its name. Adult males develop a black hood. Not sure how to fit this into a trip? Send us your dates and we’ll map out the islands for you.
Large insectivorous tree finch: a bark-tearing bill
The large tree finch puts its powerful beak to work. It tears at bark and twists apart twigs and soft wood to reach the insects and larvae hidden inside — a near-woodpecker style of feeding. Where its cousin the woodpecker finch uses a cactus spine as a tool, the large tree finch simply muscles its way in with raw bill strength — which is exactly why it earns the name large insectivorous tree finch, the bug specialist of the trio.
What it eats
Its diet is mainly insects and their larvae, prised from bark and wood, plus some buds and fruit. By specialising in prey that needs a strong bill to reach, it carves out its own niche among the tree finches — another example of how Darwin’s finches divide up the food supply by beak. These large tree finch facts help separate it from its smaller, daintier-billed cousins.
Where it lives
The large tree finch habitat is humid forest and transition woodland on several islands. It is a true tree-dweller, working trunks and branches rather than the ground.
Where to see it
Look up into the wooded zones:
- Santa Cruz highlands — Scalesia forest and transition zone.
- Isabela and Santiago — humid forest and woodland.
- On trunks and branches — watch for a chunky finch tearing at bark.
Catching one usually means a few highland walks — our 6-day Santa Cruz and Isabela land tour works in the forested zones where the tree finches feed.
Is the large tree finch endangered?
Here is the part the field guides gloss over: the large tree finch is in real trouble. The IUCN now lists it as Vulnerable, and on some islands it has thinned out badly. The main culprit is Philornis downsi, an introduced fly whose larvae feed on finch chicks in the nest; avian pox and shrinking native forest pile on. None of this means you will not see one — but it is why a sighting up in the highlands feels like a small privilege rather than a given. This is one of the stops on our 5-day island hopping itinerary.
6-Day Galapagos Land Tour Santa Cruz + Isabela Highlights
From $1,150 p.p.
- Sleep in island hotels, not a cruise cabin
- Local naturalist guides
- Flexible day-by-day island hopping
Quick facts
A few more facts about the finch:
- Its scientific name is Camarhynchus psittacula, meaning “little parrot”.
- It is the largest and heaviest of the three tree finches.
- It has a heavy, curved, parrot-like bill.
- It tears bark and twigs to reach insects, near-woodpecker style.
- It lives in humid forest on several islands.
Camarhynchus psittacula, the little parrot finch
The scientific name camarhynchus psittacula means “little parrot”, and one look at the bird’s heavy, strongly curved bill explains why. It is the largest and most powerfully built of the three tree finches, and that bill is its signature — broad, deep and hooked enough to do work the smaller tree finches cannot. Where its relatives glean delicately, this one bullies its way to food with raw strength.
Among the tree-finch trio it sits at the top of the size scale, and the progression from small to medium to large is, in effect, a progression of bill power. Each takes a slightly different slice of the insect supply, and the heaviest bill belongs to the bird that goes after the best-protected prey.
Large tree finch diet
The large tree finch diet is mainly insects and their larvae, prised from bark and dead wood, with some buds and fruit. Its method is almost woodpecker-like: it tears at bark and twists apart twigs to reach the grubs hidden inside, reaching prey that lighter-billed finches simply cannot. Where the woodpecker finch solves the same problem with a cactus-spine tool, this species solves it with sheer bill power.
That muscular approach gives it a feeding niche of its own among the tree finches, another small example of how the family has divided the islands’ resources by beak. It is a deliberate, methodical feeder, working a trunk or branch thoroughly before moving on.
Large tree finch habitat
The large tree finch habitat is humid forest and transition woodland on several islands, where it keeps to trunks and branches rather than the ground. It is a true tree-dweller, and like its relatives the adult males develop a black hood with age, so a wooded highland can hold birds at different stages of plumage.
A few closing large tree finch facts: at around 18 grams it is the heavyweight of the trio, its scientific name is a nod to that parrot-like bill, and it is best found by watching trunks for a chunky finch wrenching at bark. For anyone working through Darwin’s finches, it rounds out the tree-finch story with a flourish of brute force.
It is the heavyweight of the three tree finches, the biggest and most robust of the trio at around eighteen grams. Its most telling feature is the bill: heavy, deep and strongly curved, almost parrot-like — which is exactly what its scientific name, meaning ‘little parrot’, describes. That powerful tool, paired with a black hood on adult males, makes it the most imposing member of the group.
What it does with that bill is remarkable. Rather than gleaning insects daintily from leaves like its smaller cousins, it tears at bark and twists apart twigs and dead wood to reach the grubs and larvae hidden inside — a near-woodpecker way of life, but achieved by brute mechanical strength rather than the famous tool-using trick of the woodpecker finch. It rounds out its mostly insect diet with some buds, fruit and soft plant matter.
Look for it working the canopy of humid forest and transition woodland on several of the larger islands, moving more deliberately than the restless small tree finch. It is less common than its little relative, so picking one out — by its bigger size, heavier bill and the loud, tearing sound of its feeding — is a satisfying moment for any birdwatcher piecing together the finch family one species at a time.
Where the Large Tree Finch Fits Among the Others
The large tree finch belongs to the humid highlands rather than the dry coast, which is the single most useful thing to know when you are trying to find one. Our guide to Darwin’s finches covers how the group split the habitats, and the large cactus finch is its opposite number on the arid outer islands.
In practice the highlands of Santa Cruz Island are where most travelers see it, on the same drive that takes you to the giant tortoise reserves. The Galapagos flycatcher and the Galapagos mockingbird share that habitat. See also Galapagos birds.
Questions I get all the time
What is the largest tree finch?
The large tree finch (Camarhynchus psittacula) — at about 13 cm and 18 g it is the biggest, heaviest-billed of the three Galápagos tree finches.
What do large tree finches eat?
Mostly insects and their larvae, prised from bark and dead wood, plus some buds and fruit. That heavy bill lets it tear into wood the smaller tree finches cannot.
Why is its scientific name “little parrot”?
Camarhynchus psittacula means “little parrot,” a nod to the heavy, deep, parrot-like bill with slightly crossing mandible tips.
Where can you see it?
In the humid forest and transition woodland of the larger central islands — look up into the canopy on Santa Cruz, Isabela, Floreana and San Cristóbal.
Is the large tree finch endangered?
Yes — the IUCN lists it as Vulnerable. Numbers are falling, mainly because of the introduced Philornis downsi fly, whose larvae feed on finch nestlings, plus avian pox and habitat loss.
Is the large tree finch extinct?
No, but it is in trouble. It has disappeared from some islands and is Vulnerable overall, so sightings are less reliable than for the common ground finches.
How is it different from the woodpecker finch?
Both hunt wood-boring insects, but the woodpecker finch uses a cactus spine or twig as a tool, while the large tree finch just muscles in with raw bill strength.
What is the largest species of finch?
Among Darwin’s finches the large ground finch is the bulkiest overall; among the tree finches, the large tree finch is the biggest.
What is the closest relative of the large tree finch?
The other tree finches — the medium and small tree finches (genus Camarhynchus) — along with the tool-using woodpecker finch.
Final thoughts from the islands
The finch rounds out Darwin’s tree-finch trio with sheer bill power. Spot one wrenching bark from a branch and you are watching the muscle of the family at work — evolution’s answer to a woodpecker, finch-style.
Read more at eBird, or meet the whole family in my guide to Galapagos birds, including the other Darwin’s finches and the tool-using woodpecker finch.
