Eurasian Tree Sparrow (Passer montanus malaccensis)
Tampines, 27th July 2017

• NParks Flora & Fauna Web
• The Biodiversity of Singapore
• Singapore Birds Project
• The Birds of NUS
• The Tide Chaser: Passerines or Perching Birds (Phylum Chordata: Order Passeriformes) of Singapore
• Oriental Bird Images
• Internet Bird Collection
• BirdForum Opus
• Planet of Birds
• Royal Society for the Protection of Birds
• British Trust for Ornithology Birdfacts
• British Trust for Ornithology Garden Birds
• BirdWatch Ireland
• National Audubon Society Birds
• All About Birds
• ARKive
• IUCN Red List
• Seasonal breeding in an equatorial population of the Tree Sparrow Passer montanus