Egretta sacra
Silhouette: L. Shyamal · PhyloPic
In 3 days ~40% in a week ~70%
The Pacific reef heron (Egretta sacra), also known as the eastern reef heron or eastern reef egret, is a species of heron found throughout southern Asia and Oceania. It occurs in two colour morphs with either slaty grey or pure white plumage. The sexes are similar in appearance.
The Pacific reef heron was formally described in 1789 by the German naturalist Johann Friedrich Gmelin in his revised and expanded edition of Carl Linnaeus's Systema Naturae. He placed it with the herons, cranes and egrets in the genus Ardea and coined the binomial name Ardea sacra. Gmelin based his description on the "Sacred heron" that had been described in 1785 by the English ornithologist John Latham in his multi-volume work A General Synopsis of Birds. The naturalist Joseph Banks had provided Latham with a specimen of a white morph that had been collected on Tahiti. The Pacific reef heron is now placed with 12 other species in the genus Egretta that was introduced in 1817 by the German naturalist Johann Reinhold Forster. The genus name comes from the Provençal French for the little egret, aigrette, a diminutive of aigron, "heron". The specific epithet sacra is from Latin sacer meaning "sacred... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Cape Range | 🇦🇺 Australia | |
| 2 | Komodo National Park | 🇮🇩 Indonesia | |
| 3 | Ningaloo Marine Park | 🇦🇺 Australia | |
| 4 | Raja Ampat | 🇮🇩 Indonesia | |
| 5 | Tangkoko Nature Reserve | 🇮🇩 Indonesia | |
| 6 | Noosa National Park | 🇦🇺 Australia | |
| 7 | Rottnest Island | 🇦🇺 Australia | |
| 8 | Daintree National Park | 🇦🇺 Australia | |
| 9 | Abel Tasman National Park | 🇳🇿 New Zealand | |
| 10 | Bali Barat National Park | 🇮🇩 Indonesia | |
| 11 | Booderee National Park | 🇦🇺 Australia | |
| 12 | Royal National Park | 🇦🇺 Australia | |
| 13 | Fiordland National Park | 🇳🇿 New Zealand | |
| 14 | Taroko National Park | 🇹🇼 Taiwan |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Naha | 🇯🇵 Japan | |
| 2 | Denpasar | 🇮🇩 Indonesia | |
| 3 | Đà Nẵng | 🇻🇳 Vietnam | |
| 4 | Kitakyushu | 🇯🇵 Japan | |
| 5 | Davao City | 🇵🇭 Philippines | |
| 6 | Singapore | 🇸🇬 Singapore | |
| 7 | Hong Kong | 🇨🇳 China | |
| 8 | Busan | 🇰🇷 South Korea | |
| 9 | Auckland | 🇳🇿 New Zealand | |
| 10 | Taipei | 🇹🇼 Taiwan |
Possible
About 20% of wildlife watchers report a Pacific Reef Heron sighting in Đà Nẵng on a given day, based on 12 verified sightings from GBIF citizen-science data. It is the 32nd most-seen of the 56 birds we can rate there. Over three days the chance rises to about 40%, and over a week to about 70%, if each day is a fresh chance.
March
In that month about 50% of wildlife watchers report a Pacific Reef Heron in Đà Nẵng on a given day, against about 10% in May–September and November–February, the lowest months. That is one of Đà Nẵng's driest months, with about 40 mm of rain against 560 mm in October.
Between 11 am and 2 pm
Across all the parks we cover, that three-hour window holds the most Pacific Reef Heron sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Among the best
Of the 17 cities where we can rate Pacific Reef Heron sightings, Đà Nẵng ranks 3rd at about 20%, level with the leaders once rounded. The best odds are in Naha (Japan, about 20%) and Denpasar (Indonesia, about 20%).
Same genus: Egretta
The closest relatives of the Pacific Reef Heron that you can see in Đà Nẵng (genus Egretta, Small Egrets and Herons) are Little Egret (about 60%) and intermediate egret (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Pacific Reef Heron is recorded against all the birds logged in Đà Nẵng (12 verified sightings), calibrated against known sighting rates. Figures are rounded to the nearest 10% because citizen-science data supports honest approximations, not decimals, and months with records from fewer than five people show "—". How it works.
