Further to the lively discussion last Monday on Bird feeders, Denis Doucet, the presenter has provided the following links for further reading:

Strategies to prevent and control bird feeder associated diseases and threats https://www.cwhc-rcsf.ca/docs/technical_reports/CWHC%20Bird-Feeder%20Strategy_June_2018.pdf

Bird feeder fact sheet https://www.cwhc-rcsf.ca/docs/fact_sheets/Bird_Feeder_Strategies_Trifold.pdf

Audobon guide to birdfeeders https://www.sfvaudubon.org/wp-content/uploads/2016/06/Audubon_Guide_Bird_Feeders_printPDF.pdf