- Helm. p. 91. ISBN 978-0-7136-5208-6. R. A. Robinson. "Green Wood****".
BirdFacts.
British Trust for Ornithology.
Retrieved 4
January 2011. Goodge, W R...
- 1758]".
BTOWeb BirdFacts.
British Trust for Ornithology.
Retrieved 2008-02-04. Snow &
Perrins (1998) 873–4 "Hooded Crow
Bird Facts (Corvus cornix)"...
- Robinson, R.A. "Sparrowhawk
Accipiter nisus [Linnaeus, 1758]".
BirdFacts:
profiles of
birds occurring in
Britain & Ireland.
British Trust for Ornithology...
-
Birds are a
group of warm-blooded
vertebrates constituting the
class Aves (Latin: [ˈaːwεs]),
characterised by feathers,
toothless beaked jaws, the laying...
-
Retrieved 9
April 2012. "Blackbird ****us
merula [Linnaeus, 1758]".
BTOWeb BirdFacts.
British Trust for Ornithology.
Retrieved 30
December 2007. "89% of Blackbird...
-
Retrieved 29
September 2017.
Angry Birds Facts (7
March 2021). "Angry
Birds Space ****ault was the
cancelled sequel to
Angry Birds Space. It was
described as a...
-
Canada Goose at
eBird (Cornell Lab of Ornithology)
Canada Goose – BTO
BirdFacts Rediscovery report on
Giant Canada Goose from 1963
Archived February 28...
- on 2016-03-04.
Retrieved 2009-10-28. Robinson, R.A. (2005). "
BirdFacts:
profiles of
birds occurring in
Britain & Ireland". BTO Research.
Retrieved 28 October...
-
Dictionary of
Scientific Bird Names. London:
Christopher Helm. pp. 290, 311. ISBN 978-1-4081-2501-4. Robinson, R. A. "Marsh Tit".
BirdFacts.
British Trust for...
-
British Trust for Ornithology. 9 May 2012.
Retrieved 20
April 2014. "
Birdfacts —
British Trust for Ornithology".
British Trust for Ornithology. 16 July...
