Keith Swindle's research while affiliated with Kenya Wildlife Service and other places

Publications (3)

Article
Full-text available
Attraction to artificial light at night (ALAN) poses a threat to many fledgling seabirds leaving their nests for the first time. In Hawai'i, fledgling wedge-tailed shearwaters disoriented by lights may become grounded due to exhaustion or collision, exposing them to additional threats from road traffic and predation. While the timing and magnitude...
Research
Full-text available
This study evaluated temporal trends and spatial factors, such as fallout clustering near lights and proximity to colonies, to inform targeted management actions. Standardized surveys were conducted from 2002 to 2010 for Wedge-tailed Shearwater Ardenna pacifica (WTSH) fallout on the island of O‘ahu, Hawai‘i, USA. First, yearly fallout counts along...

Citations

... Despite having the more intense light, HPS lights attracted and grounded the lowest number of fledglings, which was explained by the narrower range of wavelength emissions (Rodríguez et al., 2017a). However, a recent study did not find an increase in Wedge-tailed Shearwater fallout after the change from HPS to shielded 3000-4000K LED streetlights (Urmston et al., 2022). Intensity and color of the light play a role in the flying behavior of adults visiting the colony. ...
... A conceptual model to explain fallout involves fledging seabirds being drawn toward welllit coastal areas, especially in the absence of moonlight [4,5,[8][9][10][11] and when strong winds are directed toward shore [10,11]. Birds are affected by bright light sources from vessels at sea and urbanized areas on shore, including streetlights and sports fields [1,6,[12][13]. Moreover, collisions with powerlines and other structure can lead to injury and grounding [14,15]. ...
... Turning lights off has reduced the number of grounded fledglings in Leach Storm-petrels Hydrobates leucorhous and Short-tailed Shearwaters Ardenna tenuirostris (Miles et al., 2010;Rodríguez et al., 2014). In other cases, the management of certain light poles can substantially reduce the fallout as recently described on Oahu, Hawaii, for the Wedge-tailed Shearwater Ardenna pacifica (Friswold et al., 2020). By determining areas with the highest fallout, avoidance can be focused on targeted areas, even light sources (i.e., lamps). ...