This study describes two new species of Neodiplostomum (Trematoda: Diplostomidae) and reports a new lineage parasitising birds in Northwestern Patagonia, Argentina, based on morphological and molecular evidence. Specimens were recovered from the intestines of Falco sparverius, Caracara plancus, Accipiter bicolor, and Strix rufipes between 2001 and 2025. Morphological analyses revealed that the new taxa, herein named Neodiplostomum sparverius n. sp., and Neodiplostomum caracara n. sp., and the unnamed species Neodiplostomum sp. 1 show differences mainly in body segment ratio, sucker size, and vitelline gland distribution. This work contributes 14 new sequences to this genus. Phylogenetic analyses of nuclear (28S rDNA) and mitochondrial (cox1) sequences placed N. sparverius n. sp. within a clade comprising Neodiplostomum banghami and Neodiplostomum americanum; Neodiplostomum sp. 1 clustered with Neodiplostomum microcotyle and Neodiplostomum vaucheri, among others, confirming the existence of two well-supported Neodiplostomum lineages: the first is restricted to avian hosts, whereas the second includes birds and mammals. These results provide the first record of species of the genus Neodiplostomum in Patagonia, and the first molecular sequences for species of this genus in Argentina, thus expanding the known diversity and distribution of the genus in South America. The integrative approach supports the need for taxonomic revision of the genus Neodiplostomum.

A previously unknown raptor migration hot spot has been identified in southern Greece. During the post-breeding migration of 2024, a total of 11,790 individuals were recorded in 15 days, including 11,606 European Honey Buzzards Pernis apivorus. GPS tracking data from Finnish and Hungarian populations further highlight the site’s significance, suggesting that it could become the third migration hot spot for the species in the Mediterranean, alongside the Straits of Gibraltar and Messina. Plans to develop a wind farm in the area raise concerns due to its crucial role in the beginning of the long sea crossing to Libya.

The Australasian harrier Circus approximans, a native of Australia, New Zealand and the South Pacific, is an opportunistic hunter of small prey, although a large part of its diet consists of carrion, mainly from roadkill. Besides a record of a single, unnamed species of capillariid nematode there have been no investigations into the parasites of Australasian harriers in New Zealand. In this study, a helminthological survey of sixty-five deceased harriers from southern New Zealand uncovered a gastrointestinal helminth fauna consisting of six parasite species. Porrocaecum circinum (Nematoda) was previously described only from fragmented females, and a redescription is presented here. Procyrnea fraseri n. sp. (Nematoda) is described, and distinguished from its congeners by its slender body shape and shorter spicules. Strigea falconis (Trematoda) is reported for the first time in New Zealand. Cladotaenia anomalis (Cestoda) and Polymorphus circi (Acanthocephala) were previously described as new species elsewhere. An unnamed species of capillariid appears to be mainly confined to North Island and is rare in South Island. Prevalence and intensity metrics are given, and DNA sequences provided to accompany new re/descriptions. Potential intermediate hosts are discussed, and the origins of the helminths and their potential for pathogenicity are considered.