Gerygone insularis (Lord Howe Gerygone)

[another specialist]

TAXON SUMMARY
Lord Howe Gerygone

1 Family Pardalotidae

2 Scientific Name Gerygone insularis Ramsay, 1879

3 Common Name Lord Howe Gerygone

4 Conservation status Extinct

5 Reasons for listing
There have been no records of this species since 1928.

6 Infraspecific taxa
G. insularis, along with G. modesta (Norfolk I.;
Vulnerable) is sometimes considered a subspecies of
G. igata (New Zealand; Least Concern; Schodde and
Mason, 1999).

7 Past range and abundance
The Lord Howe Gerygone was endemic to Lord
Howe I. Until the early 20th century, it was considered
abundant Even 10 years after the arrival of Black Rats
Rattus rattus in 1918 its call was heard frequently
(Sharland, 1929). However, it was neither seen nor
heard during searches in 1936 (Hindwood, 1940), and
there have been no confirmed records since (McKean
and Hindwood, 1964).

8 Ecology
Almost nothing is known of the biology of the Lord
Howe Gerygone except that it was found in forests
around the settlement (Sharland, 1929).

9 Reasons for extinction
Black Rats, which colonised the island from a wrecked
ship in 1918, were almost certainly responsible for the
Lords Howe Gerygone’s extinction (Hindwood, 1940).

www.deh.gov.au/biodiversity/threatened/action/birds2000/pubs/lhi-gerygone.pdf

[another specialist]

Justification

Lord Howe Gerygone Gerygone insularis was an abundant endemic to the forests of Lord Howe Island, Australia, until the island was colonized by rats from a shipwreck in 1918. It could not be found on a visit in 1936, and there are no subsequent records. Presumably its extinction resulted from nest predation by the rats. Taxonomy The taxon has been considered conspecific with Grey Gerygone G. igata of New Zealand and Norfolk Island Gerygone G. modesta, but it is generally considered distinct.

www.iucnredlist.org/search/details.php?species=9165

[another specialist]

www.birdlife.org/datazone/search/species_search.html?action=SpcHTMDetails.asp&sid=5454&m=0

[Deleted]

Hi !

Gerygone insularis:



Bye
Alex

[another specialist]

Peters Checklist 11:456 (Mayr) lists this as "Gerygone insularius [sic]" and in fact the Richmond index confirms that the original spelling was insularius; Mayr does not share with us the basis for his belief that the original spelling was incorrect, if in fact it was.

www.zoonomen.net/avtax/n/i.html

[sebbe67]

[another specialist]

noisi said:

Hi !

Gerygone insularis:



Bye
Alex

www.flickr.com/

[surroundx]

Etheridge, R. (1889). The general zoology of Lord Howe Island; containing also an account of the collections made by the Australian Museum Collecting Party, Aug.–Sept., 1887. Australian Museum Memoir 2(1): 1-42, plates iv–v.

[Sebbe]

Extinct Australian birds: numbers, characteristics, lessons and prospects.

Since European colonisation of Australia in 1788, nine Australian bird species (1.2% of the Australian total) have become extinct, along with 22 subspecies (of 16 species). Consistent with global patterns, Australia’s island endemic birds have been particularly susceptible, comprising eight of the nine species’ extinctions (38% of the bird species endemic to islands smaller than Tasmania), and 13 of the 22 subspecies’ extinctions. The extinction of only one bird species (Paradise Parrot Psephotellus pulcherrimus) from the Australian mainland contrasts with the far higher rate of extinctions of Australian mammals (27 of 312 species that occurred on the Australian mainland), and is comparable with the rate of extinctions of birds on the mainland of other continents over this period. Extinctions of Australian birds were caused mainly by introduced predators (especially for island taxa), habitat degradation, and hunting (for some island taxa). The timing of some extinctions is uncertain, but the first bird extinction subsequent to European colonisation was the loss of the flightless White Gallinule Porphyrio albus from Lord Howe Island over the period 1788–1790. Extinctions have occurred in most decades since then, with the most recent being for Norfolk Island’s White-chested White-eye Zosterops albogularis in the decade 2000–2009. Environmental legislation, an extensive conservation reserve system, and dedicated conservation management efforts have prevented some extinctions. However, local extirpations continue, many threatened species continue to decline and, without an increase in conservation efforts, the rate of extinctions is likely to increase, mainly due to the direct and compounding impacts of climate change.

www.tandfonline.com/doi/full/10.1080/01584197.2023.2240345#abstract