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Reviews: The Quickening: Antarctica, Motherhood, and Cultivating Hope In A Warming World
No full textPage 05: Buying & Selling Zion
No full textPage 5 of 12 of the LHI Zion Cemetery Poster Project (FLDOS). Download to view in high resolution.https://digitalcommons.usf.edu/zion_posters/1005/thumbnail.jp
Page 10: Honoring Ancestors
No full textPage 10 of 12 of the LHI Zion Cemetery Poster Project (FLDOS). Download to view in high resolution.https://digitalcommons.usf.edu/zion_posters/1010/thumbnail.jp
Recent Records of Little Cormorant \u3ci\u3eMicrocarbo niger\u3c/i\u3e in Sumatra, Indonesia
No full textWe summarize observations of the Little Cormorant Microcarbo niger in Sumatra from 2016 to 2019. Based on these observations, we suggest that Little Cormorant has become widespread in Sumatra
Manx Shearwaters \u3ci\u3ePuffinus puffinus\u3c/i\u3e Breeding in the Western Atlantic Follow a Different Migration Route from their Eastern Atlantic Conspecifics
No full textManx Shearwaters are transequatorial migrants, and most of the world’s population breeds in Britain and winters off the Patagonian Shelf in the western South Atlantic. The migration route of British birds follows a well-known clockwise movement between the North and South Atlantic, taking advantage of the winds. Whether this main Manx Shearwater migration corridor is used by the smaller populations breeding in the western North Atlantic is unknown. Here, we report our findings from tracking two adults from a newly-established colony of Manx Shearwaters in Maine, USA using miniature geolocators. The tracked shearwaters followed a post-breeding migration route southward along the US East Coast, through the Caribbean Sea, and along the coast of eastern South America. Such a route greatly differs from the western North Atlantic birds’ southbound migration route, being instead the reverse of the British birds’ spring migration route. We also used the tracking data to provide insight into the phenology of the birds’ annual cycle. Although our sample size is very small, our findings reveal a previously unknown migration route of Manx Shearwaters and raise questions about the origin of birds on western North Atlantic colonies and the mechanisms controlling migratory direction in the species
Wedge-tailed Shearwater \u3ci\u3eArdenna pacifica\u3c/i\u3e Fallout Patterns Inform Targeted Management
No full textSeabird fledglings are often attracted to artificial, bright lights, leading to their grounding. This phenomenon is termed “fallout” and is associated with an increased risk of mortality from land-based threats. 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 the transect showed a two-year cycle and identified 25 November as the date with the highest fallout across years. Second, artificial lights and utility lines were present in 94% and 83% of fallout locations, leading to significantly higher fallout rates at these locations compared to random points along the transect. Third, fallout decreased significantly as the distance from the colonies increased and was negligible farther than 5 km from the nearest colony. Overall, 60% of all fallout occurred along a 1.7 km section of the survey route, with 27% of this fallout occurring within 8 m of two light poles, highlighting the need for targeted management. Finally, the disposition outcomes of rescued shearwaters from non-fatal fallout were analyzed. Among grounded individuals that were recovered alive, 78% were admitted for rehabilitation with no injury and released. This suggests that rescue efforts during high-risk periods that are focused within 5 km of colonies, in fallout hot spots, are likely to enhance survival. Because little is known about the environmental drivers of WTSH fallout, our results specify when, where, and how targeted management could be used most effectively to reduce fallout on O‘ahu. Our targeted approach may be applied in other regions where seabird fledging is heavily impacted by artificial lights
Birds Depredating Stingrays and Skates (Chondrichthyes: Batoidea): New Observations and a Review of Records
No full textGulls (Larus spp.) have a diet that includes fish, but they are also often dietary generalists. A limited number of dietary studies have been undertaken on the Pacific Gull Larus pacificus, which are endemic to Australia. Here, an observation of depredation by a Pacific Gull on a Southern Fiddler Ray Trygonorrhina dumerilii is described. Prior to this observation, rays and skates had not been recorded in the diet of Pacific Gulls, and there are few records in the literature of depredation by gulls (Laridae) or other bird families on species of cartilaginous fishes from the superorder Batoidea. However, there is substantial documentary evidence, available online, of gulls and other bird species preying on rays and skates, which is described herein
No Evidence of Avian Malaria in two Mediterranean Endemic Seabirds
No full textIn birds, pathogens and diseases—such as avian malaria—can have severe detrimental effects on individual fitness. Pathogen prevalence can vary across species and may differ between populations living in different localities, but screening can aid in our understanding of a disease’s distribution and parasite-host interactions. Although seabirds generally exhibit low avian malaria infection patterns, blood parasites of several species and populations have never been investigated in detail. Using molecular techniques, we screened for blood parasites in two Mediterranean seabirds, the Scopoli’s Shearwater Calonectris diomedea and the Mediterranean Storm Petrel Hydrobates pelagicus melitensis. In addition, we searched for and sampled potential vector insects at each seabird colony. DNA was extracted from blood samples (or whole specimens for vector insect species), and polymerase chain reaction was performed to assess the presence of Plasmodium, Haemoproteus, and Leucocytozoon, the most frequent infective protozoan genera. Our results showed no evidence of haemosporidians, either in the sampled species or in the vector insects. The low prevalence of parasites in these species could reflect the absence or rarity of the vector for transmission. Thus, extreme care must be taken when releasing individuals into the wild to avoid introducing infection into new seabird populations
Spotted Again After 29 years: Spot-billed Pelican \u3ci\u3ePelecanus philippensis\u3c/i\u3e in Indonesia
No full textWe report an observation of a Spot-billed Pelican Pelecanus philippensis on 07 October 2021 in North Sumatra Province, Indonesia. This is the first sight-record of the species in Indonesia since 1992