This Week's Bird in the Hand
As part of the wildlife assessment at the Neawanna Observatory, birds are being captured and banded using
mist-nets.  The following photographs were taken of species captured and released during the 2001 banding
season.
 
Singing female Purple Finches are routinely 
reported by those who may not be aware 
that males in their first summer (second year) 
look like females.  These young males go 
through all the hormonal and physiological 
changes (including testicular development 
which can be seen if a bird is in hand) that 
older "purple" males go through.  If you see 
a singing finch that looks like a female you are 
almost certainly looking at one of these first 
summer males.

Black-headed Grosbeaks - aldult male (left) and adult female (right)
Male MacGillivray's Warbler
Pacific-slope Flycatcher
Note: yellow eye-ring elongated behind eye, yellow margins to 
coverts and tertials, longer primary projection, shorter p10.
Willow Flycatcher
Note: virtually no eye-ring, whitish margins to coverts and tertials, 
(relatively) shorter primary projection, longer p10.

Other in hand shots:
    Hermit Thrushes
    Orange-crowned Warblers
    Fox Sparrows