Outdoor and Feral Cats Sources
https://abcbirds.org/threat/cats-and-other-invasives/
https://abcbirds.org/program/cats-indoors/
https://abcbirds.org/program/cats-indoors/cats-and-diseases/ (Diseases)
https://abcbirds.org/program/cats-indoors/trap-neuter-release/ (TNR ineffective)
https://abcbirds.org/wp-content/uploads/2015/05/TNR_the-wrong-solution2011.pdf (TNR fact sheet)
https://abcbirds.org/wp-content/uploads/2015/05/The-Evidence-Against-TNR.pdf (TNR studies)
Invasive predators and global biodiversity loss
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5056110/
Feral Cat (Felis catus) - Invasive Fact (Australian Government)
https://www.dcceew.gov.au/environment/invasive-species/feral-animals-australia/feral-cats
https://nre.tas.gov.au/invasive-species/invasive-animals/invasive-mammals/feral-cats
Domestic Cats (Felis catus) and European Nature Conservation Law—Applying the EU Birds and Habitats Directives to a Significant but Neglected Threat to Wildlife
https://academic.oup.com/jel/advance-article/doi/10.1093/jel/eqz035/5640440
Effects of an Invasive Species: Domestic Cats (The Wildlife Society)
http://wildlife.org/wp-content/uploads/2017/05/FactSheet-FeralCats_FINAL-1.pdf
The Moral Cost of Cats (Smithsonian)
https://www.smithsonianmag.com/science-nature/moral-cost-of-cats-180960505/
Alarming number of fledgling, suburban catbirds fall prey to domestic cats (Smithsonian)
Cat Wars (Book)
https://press.princeton.edu/titles/10809.html
Impacts of Invasive Cats on Island Endangered Vertebrates
https://onlinelibrary.wiley.com/doi/abs/10.1111/j.1365-2486.2011.02464.x
Impact of Outdoor Cats on Birds and Other Wildlife (National Wildlife Federation)
Indoor Cats vs. Outdoor Cats (American Humane)
https://www.americanhumane.org/fact-sheet/indoor-cats-vs-outdoor-cats/
The impact of free-ranging domestic cats on wildlife of the United States (Nature)
https://www.nature.com/articles/ncomms2380/
The Effects of Cats On Wildlife (Cascades Raptor Center)
https://cascadesraptorcenter.org/articles/the-effects-of-cats-on-wildlife
'Kitty litter' parasite is wiping out one of Earth’s rarest seals (National Geographic)
https://www.nationalgeographic.com/animals/2018/07/seals-endangered-species-health-disease-oceans/
Pets and Wildlife (PAWS Wildlife)
https://www.paws.org/wildlife/having-a-wildlife-problem/pets-and-wildlife/
TNR Not Working
https://hahf.org/awake/tnr-not-working/
Critical Assessment of Claims Regarding Management of Feral Cats by Trap–Neuter–Return
https://hahf.org/wp-content/uploads/media-5/TNR-assessment-of-claims.pdf
Hybridization versus Conservation: Are Domestic Cats Threatening the Genetic Integrity of Wildcats (Felis silvestris silvestris) in Iberian Peninsula?
The Prey of Two Rural Domestic Cats
Our cute killers: Cats kill more than 1.5 billion native animals per year in Australia (Threatened Species Recovery Hub)
Towards recovery of an endangered island endemic: Distributional and behavioral responses of Key Largo woodrats associated with exotic predator removal (Science Direct)
Australian wildlife 20 times more likely to encounter deadly feral cats than native predators https://www.theguardian.com/environment/2021/jan/06/australian-wildlife-20-times-more-likely-to-encounter-deadly-feral-cats-than-native-predators
Single cat kills off colony of Fairy Tern (Australian Geographic)
http://stateofthebirds.org/2014 (http://www.stateofthebirds.org/2014/2014%20SotB_FINAL_low-res.pdf)
Making an Outdoor Cat Into an Indoor Cat / Enriching Indoor Cats Lives (Resources)
DIY Catios
https://catiospaces.com/catios-cat-enclosures/diy-plans/
https://www.catssafeathome.org/catio-resources
The Dangers of Outdoor Living for Cats (Pet Coach)
https://www.petcoach.co/article/outdoor-cats-face-many-hazards/
Cats and the Perils of Outdoor Living (VCA)
https://vcahospitals.com/know-your-pet/cats-and-the-perils-of-outdoor-living
Observations of Coyote-Cat Interactions