Hawk alarm or whistle, given by a Blackbird, this one hidden in a bush, shortly before dawn (Apr, Norfolk). This call is identical to that given by the Robin.
Blackbird calls at dawn, consisting of a quieter pok and louder pli pli pli (Dec, Suffolk).
Another example of these agitated calls, again at dawn (Dec, Herts).
pok
pli
The calls often accelerate into a crescendo, especially by birds on short flights (Dec, Suffolk).
reduced time scale
Migrant Blackbirds have a trilled or sibilant call that is similar to the calls of Tree Creeper or waxwings,(Dec, Herts).
The Redwing flight call, also given regularly by feeding flocks as a contact call, is similar to the Blackbird call, but is a finer buzz (Dec, Herts).
In this recording, the first flight call is a Blackbird, the second and third Redwing (Dec, Herts).
Redwings also have a Blackbird-like puk (Dec, Herts).
Harsh calls (alarm calls?) are also heard from Redwing flocks (Apr, Herts)
The flight call of Fieldfares is similar (flock of 50 in flight, Apr, Suffolk).
Song Thrush alarm call (Mar, Herts).
(May, Herts).
reduced time scale
Flight call, a high tip (July, Cumbria).
Mistle Thrush alarm (two interacting birds, May, Herts).
Birds of the World Online previously The Birds of North America Online (BNA). Comprehensive information on all aspects of life history, including audio and video. By subscription.
Birdsong by the Seasons. Donald Kroodsma, Houghton Mifflin, 2009. Another great book with CDs from Dr Kroodsma.
Flight Calls of Migratory Birds WR Evans and M O'Brien. CD-ROM www.oldbird.org. Excellent source of information on flight calls
Nature's Music, The Science of Birdsong. Peter Marler and Hans Slabbekoorn. Elsevier Academic press. 2004. A treasure trove of information, advanced but very readable (comes with CD).
Peterson Field Guide to Bird Sounds of Eastern North America. Nathan Pieplow, 2017. Highly recommended, includes almost all known vocalizations of eastern US birds, with spectrograms and detailed analysis. Excellent!
Stokes Field Guide to Bird Song, Eastern Region, by Lang Elliot. 3 CDs. Of commercial recordings, this has the most comprehensive collection of songs and calls.
The Singing Life of Birds. Donald Kroodsma, Houghton Mifflin, 2005. Terrific book (plus CD), a must read.
The Songs of Wildbirds. Lang Elliott., Houghton Mifflin, 2005. Excellent photos with high quality recordings including some rare ones such as the flight song of the Western Meadowlark.
The Sound Approach to Birding. A guide to understanding bird sound. A. van de Berg, M Constantine, M. Robb. Superb discussion of bird calls and song with 2 CDs.
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