Gray-rumped Treeswift
Gray-rumped TreeswiftGray-rumped TreeswiftGray-rumped TreeswiftGray-rumped Treeswift

Gray-rumped Treeswift

Hemiprocne longipennis

Least ConcernNear ThreatenedVulnerableEndangeredCritically Endangered
20–30% · Possible
overall probability at Way Kambas National Park
46 Verified records at Way Kambas National Park
October Best month highest sighting rate
🌅 Crepuscular When it's active at dawn and dusk

The grey-rumped treeswift (Hemiprocne longipennis) is a species of bird in the Hemiprocnidae family. Currently, four extant species are placed in the family. Like the other members of the Hemiprocnidae, this species is closely related to true swifts, but unlike true swifts, the treeswifts are arboreal, often seen perched on trees, high-tension power transmission lines, and pylons. When perched, the wing tips cross over the tail. This species is commonly found in peninsular Malaysia, but has an extremely large range; there is limited information about population trends. Wikipedia →

20–30% of wildlife watchers report a Gray-rumped Treeswift sighting in Way Kambas National Park, based on 46 days of visitor records from GBIF citizen-science data.

Closest Relatives at Way Kambas National Park

Whiskered Treeswift
LC

Whiskered Treeswift

🌅 Crepuscular Bird

Hemiprocne comata

10–20% · With luck
Plume-toed Swiftlet

Plume-toed Swiftlet

🌅 Crepuscular Bird

Collocalia affinis

40–50% · Likely
White-nest Swiftlet
LC

White-nest Swiftlet

🌅 Crepuscular Bird

Aerodramus fuciphagus

20–30% · Possible
Asian Palm-Swift
LC

Asian Palm-Swift

🌅 Crepuscular Bird

Cypsiurus balasiensis

10–20% · With luck
Pacific Swift
LC

Pacific Swift

☀️ Diurnal Bird

Apus pacificus

<5% · Rare
Silver-rumped Needletail
LC

Silver-rumped Needletail

🌅 Crepuscular Bird

Rhaphidura leucopygialis

<5% · Rare
House Swift
LC Endemic

House Swift

🌅 Crepuscular Bird

Apus nipalensis

<5% · Rare
Brown-backed Needletail
LC

Brown-backed Needletail

🌅 Crepuscular Bird

Hirundapus giganteus

Insufficient data
Black-nest Swiftlet
LC

Black-nest Swiftlet

☀️ Diurnal Bird

Aerodramus maximus

Insufficient data

📅 Monthly Probability

20–30
Jan
20–30
Feb
10–20
Mar
10–20
Apr
10–20
May
10–20
Jun
10–20
Jul
10–20
Aug
20–30
Sep
20–30
Oct
20–30
Nov
10–20
Dec

🌅 When They're Spotted

Most active at dawn and dusk · across all parks (global)

🌅Crepuscular
☀️🌙🌙12am6am12pm6pm12am

Global Distribution

Where this species is recorded worldwide. Restricted to human observations from 2019 onwards — the same kind of record and the same period the probabilities on this page are built from, so collar-tracking studies, camera-trap arrays and museum specimens are excluded. Around Santa Rosa that removes 5,924 GPS fixes from a handful of tagged jaguars.

where this species is recorded (GBIF density — it tracks where observers go, not how likely a sighting is)  ·  parks where it occurs — tap a pin for the sighting probability there

Parks Where Found

# Park Country Probability
1 Bali Barat National Park 🇮🇩 Indonesia
30–40%
2 Khao Luang National Park 🇹🇭 Thailand
20–30%
3 Way Kambas National Park 🇮🇩 Indonesia
20–30%
4 Danum Valley Conservation Area 🇲🇾 Malaysia
10–20%
5 Kaeng Krachan National Park 🇹🇭 Thailand
10–20%
6 Khao Sok National Park 🇹🇭 Thailand
5–10%
7 Kinabalu Park 🇲🇾 Malaysia
<5%
8 Kinabatangan Wildlife Sanctuary 🇲🇾 Malaysia
<5%
9 Kerinci Seblat National Park 🇮🇩 Indonesia
Insufficient data

Quick answers

What are the chances of seeing a Gray-rumped Treeswift in Way Kambas National Park?

About 21% of wildlife watchers report a Gray-rumped Treeswift sighting in Way Kambas National Park, based on 46 days of visitor records from GBIF citizen-science data.

When is the best time to see Gray-rumped Treeswift in Way Kambas National Park?

October has the highest sighting rate for Gray-rumped Treeswift in Way Kambas National Park in our monthly data.

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