Cladogenesis and morphological diversification in passerine birds
Article Abstract:
Multiple regressions are used to evaluate the effects of time and species number on morphological diversity within clades of passerine birds. The results shows that the number of species exerts a strong influence on morphological variance independent of time and thus morphological evolution in birds seems to be associated with cladogenesis.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 2004
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Leap of faith: how birds - and instinct - led the Pennsylvanians to Ecuador
Article Abstract:
A partnership has been formed between representatives from two Nature Conservancy sites, Pennsylvania's Poconos Mountains and Ecuador's Podocarpus National Park. Problems the partnership is addressing include deforestation, road construction, watershed degradation and threats to avian biodiversity.
Publication Name: Nature Conservancy
Subject: Zoology and wildlife conservation
ISSN: 0028-5200
Year: 2001
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Chemical warfare for NYC's birds
Article Abstract:
A bill banning the use of Avitrol in New York, NY, was introduced in 1998 in response to growing concerns about its hazardous effects. The use of Avitrol to kill birds that are considered as pests in the city has done more harm than good, causing the deaths of other birds and mammals.
Publication Name: The Animals' Agenda
Subject: Zoology and wildlife conservation
ISSN: 0892-8819
Year: 1999
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