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ZEISS DTI thermal imaging cameras. For more discoveries at night, and during the day.
White-throated Sparrow
This species is a common winter visitor to East Texas usually departing by April. They are famous for negative assortative mating between the two color morphs. White-striped morphs prefer to mate with tan-striped morphs and vice versa. This appears to be a white-striped morph although it still has extensive ventral streaking usually seen on tan striped morphs. This species does not cleanly separate into tan and white striped morphs in the winter. The strong bimodal plumage pattern is normally expressed only in the breeding season. In the winter there is more of a continuum of head stripe color variation, possibly to facilitate flock cohesiveness (Atkinson & Ralph 1980).
Location
Goose Island State Park, Rockport, Texas, USA.
Date taken
18 April 2021.
Scientific name
Zonotrichia albicollis
Staff member
Opus Editor
Supporter
Attractive sparrows these with that wee patch of yellow.

Nice work here Joe - many thanks for showing him to us.
 

Media information

Category
North America
Added by
jmorlan
Date added
View count
417
Comment count
4

Image metadata

Device
Canon Canon PowerShot SX70 HS
Aperture
ƒ/6.5
Focal length
247.0 mm
Exposure time
1/200 second(s)
ISO
800
Filename
White-throatedSparrowIMG_6284.jpg
File size
330.9 KB
Date taken
Sun, 18 April 2021 5:27 PM
Dimensions
1024px x 679px

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