How feeding garden birds has changed the pecking order

Bird feeding in gardens has increased over the past 40 years and, as Georgina Mills explains, this has had a huge impact on the diversity of birds visiting UK gardens

An outbreak of trichomonosis in European greenfinches Chloris chloris and European goldfinches Carduelis carduelis wintering in Northern France

Avian trichomonosis is a common and widespread disease, traditionally affecting columbids and raptors, and recently emerging among finch populations mainly in Europe. Across Europe, finch trichomonosis is caused by a single clonal strain of Trichomonas gallinae and negatively impacts finch populations. Here, we report an outbreak of finch trichomonosis in the wintering populations of Chloris chloris (European greenfinch) and Carduelis carduelis (European goldfinch) from the Boulonnais, in northern France. The outbreak was detected and monitored by bird ringers during their wintering bird ringing protocols. A total of 105 records from 12 sites were collected during the first quarter of 2017, with 46 and 59 concerning dead and diseased birds, respectively. Fourteen carcasses from two locations were necropsied and screened for multiple pathogens; the only causative agent identified was T. gallinae. Genetic characterization was performed by four markers (small subunit ribosomal RNA, hydrogenosomal iron-hydrogenase, and RNA polymerase II subunit 1 genes, and the internal transcribed spacers (ITS) region) and confirmed the T. gallinae strain to be A1, which affects the finch populations of Europe. This was also confirmed by an ITS-based phylogenetic analysis which further illustrated the diversity of the Trichomonas infecting birds. Preliminary data on the survival and dispersion of infected birds were obtained from ring-returns of diseased individuals. The anthropogenic spread of diseases through bird feeding practices is highlighted and some suggestions to prevent pathogen transmission via backyard supplementary feeders for garden birds are given.

Ethno-Ornithology of the Mushere of Nigeria: Children's Knowledge and Perceptions of Birds

Mushere children’s ethno-ornithology was surveyed from October to November 2015 to find out their level of bird knowledge—as well as whether and how children valued and learned about birds—in order to determine the potential role such knowledge might play in Mushere biodiversity conservation. Methods included picture elicitation exercises, free-listing, and semi-structured interviews. Our results revealed a limited knowledge of birds in Mushere children, and that bird knowledge was gendered. Girls learned through observation, while boys learned through practical bird-related activities. Learning was mostly horizontal for boys but vertical and/or oblique for girls; the most reported learning mode was through oral tradition. Farmland and garden birds were the most common groups, with birds in the families Columbidae and Estrildidae having the highest salience and frequency of mention. We suggest that this reflects the importance of ecological salience, since both groups are relatively locally abundant. The children also had a limited knowledge of cultural beliefs and uses of the birds, but valued birds as important. We argue that how much children will know and learn about any biological domain will be determined by the cultural attitudes and perceptions of that domain, and the cultural importance attached to it. We conclude that the limited knowledge of birds in Mushere children reflects Mushere cultural indifference (ornithoapatheia) to birds. We suggest that a consistent and deliberate conservation education program that will work towards encouraging ornithophilia, the love of birds, and biophilia, the love of nature, in Mushere children could be beneficial.

What Happens When We Feed?

The importance and influence of food in the lives of animals has been studied is great detail in a vast number of species. This chapter outlines the many findings of this critical research that are directly relevant to understanding how the provisioning of food for garden birds may be affecting their lives.