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What is Falco Altaicus Menzbier?

Journal of Raptor Research

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Abstract

The systematics of the Altay falcon (Falco altaicus/lorenzi) remains enigmatic. First reported in 1811, it has been treated as a gyrfalcon (F. rusticolus), a saker (F. cherrug), and two separate species (F. lorenzi and F. altaicus). Of 53 'altaicus' specimens examined, at least two are misidentified gyrfalcons, many are typical sakers, but 34 (the core group) are considered to be the true Altay falcon type. Adults have red, brown, and gray color morphs. The red (backed) morph closely resembles some eastern sakers; the chocolate and gray morphs resemble respective gyrfalcon morphs. While the true affinities of the Altay falcon will be resolved by molecular genetics, the ecological, geographical, and morphological information suggest that the core group represents a gyrfalcon-saker cross that is being swamped through back crosses with the saker. The breeding range of the core group (i.e., the Altay and Sayan Mountains) is much smaller than previously reported.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
What is Falco Altaicus Menzbier?
Series title:
Journal of Raptor Research
Volume
29
Issue:
1
Year Published:
1995
Language:
English
Contributing office(s):
Patuxent Wildlife Research Center
Description:
15-25
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
First page:
15
Last page:
25
Number of Pages:
11