Bahama Nuthatch observations fuel hope for the species

One of the rarest birds in the Western Hemisphere, the Bahama Nuthatch, has been rediscovered by research teams searching the island of Grand Bahama.

The finding is particularly significant because the species had been feared extinct following the catastrophic damage caused by Hurricane Matthew in 2016, and had not been found in subsequent searches.

It is unclear how many nuthatches may be left. Observations of two birds together and other single birds (including a juvenile) scattered across miles of forest indicate that five or more birds could survive.

The Bahama Nuthatch is an Endangered species, only known from native pine forest on Grand Bahama Island, which lies approximately 100 miles off Palm Beach, Florida. Closely related to the Brown-headed Nuthatch of the southeastern United States, the Bahama Nuthatch is considered by some authorities to be a distinct species (Sitta insularis) while others regard it as a subspecies (Sitta pusilla insularis) of the Brown-headed Nuthatch (Sitta pusilla).

The Bahama Nuthatch can be distinguished from North American populations by its longer beak, shorter wings, whiter belly, and distinctive vocalizations that differ from the mainland population.

Common on Grand Bahama in the 1960s, the species declined drastically. Extensive population surveys in the mid-2000s  by Hayes et al (2004) and Lloyd and Slater (2009) confirmed that the birds had become very rare; it was estimated that 1,000 to 2,000 individuals remained, all within the “Lucaya Estates” area.  It had not been seen since Hurricane Matthew hit Grand Bahama in October 2016.

Two search teams worked in coordination with Bahamas National Trust (BNT) to rediscover the bird during the breeding season, starting in April of this year. One team was led by Zeko McKenzie and his students at the University of The Bahamas-North, supported by American Bird Conservancy, and another by University of East Anglia (UEA) masters students Matthew Gardner and David Pereira, in conjunction with BirdLife International.

Both teams first observed nuthatches in May 2018, documenting their observations with photographs. McKenzie’s team observed five birds in all, starting with a sighting of two individual Bahama Nuthatches together on May 1. The next sighting was on May 23, over a mile from the first observation, and included a juvenile bird accompanying a Bahama Warbler. The juvenile was distinguished from adults by the lack of distinctive brown plumage on the crown of the bird’s head. A video recording of this juvenile Bahama Nuthatch by McKenzie was the earliest documentation of the species’ continued survival in 2018, and was followed by additional photographs of adult birds by both research teams later in May and in subsequent months.

Dr. Diana Bell, from UEA’s School of Biological Sciences, said, “The Bahama Nuthatch is a critically endangered species, threatened by habitat destruction and degradation, invasive species, tourist developments, fires and hurricane damage.”

Regarding the moment when he saw the Bahama Nuthatch, Matthew Gardner recalled, “We had been scouring the forest for about six weeks, and had almost lost hope. At that point we’d walked about 400km (250 miles). Then, I suddenly heard its distinctive call and saw the unmistakable shape of a nuthatch descending towards me. I shouted with joy, I was ecstatic!”

“The photographs clearly show this distinctive species and cannot be anything else,” said Michael Parr, President of American Bird Conservancy. “Fortunately this is not a hard bird to identify, but it was certainly a hard bird to find.”

Parr continued, “Despite the critical situation for this species, other birds—such as the New Zealand Black Robin—have recovered from tiny populations. We are optimistic that conservation can also save the Bahama Nuthatch.”

All of the Bahama Nuthatches was observed within the Lucaya Estates, an area previously logged during the mid-1900s and since developed with many miles of roads for residential development.

A last sighting and photographs of a pair of Bahama Nuthatches was made by  Erika Gates, well-known Grand Bahama birder and guide and BirdsCaribbean Director, on June 28, 2016, prior to Hurricane Matthew on October 6, 2016. She is elated at the recent sightings of the bird. “This will hopefully generate sufficient excitement in the scientific community to begin aggressive research and map a much needed conservation strategy,” she commented.

Bahamian researcher Zeko McKenzie said, “Although the Bahama Nuthatch has declined precipitously, we are encouraged by the engagement of conservation scientists who are now looking for ways to save the species.” Zero had previously set up nest boxes for the Bahama Nuthatch, but they were not used.

“The Bahamas National Trust feels that research on endangered species, such as the Bahama Nuthatch, is really important,” said Shelley Cant-Woodside, Director of Science and Policy of the Bahamas National Trust, “especially in the face of a changing climate.”

“These recent observations confirm that the Bahama Nuthatch is not extinct; it is critical that we raise awareness about the precarious status of this unique species and do all we can to make sure it survives,” declared Lisa Sorenson, Executive Director, BirdsCaribbean.