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"https://sibleyguides.com/does-blackpoll-warbler-have-song-dialects/", "published_at": "2011-07-01T20:14:41+00:00" }, { "id": "01a0cf7e-616c-730c-baae-af98889c67d9", "title": "Powder down and the Black-crowned Night-Heron", "url": "https://sibleyguides.com/powder-down-and-the-black-crowned-night-heron/", "published_at": "2011-06-29T17:01:35+00:00" }, { "id": "01a0cf7e-616c-730c-baae-af98897fa1c9", "title": "Does Cattle Egret have a dark morph?", "url": "https://sibleyguides.com/does-cattle-egret-have-a-dark-morph/", "published_at": "2011-06-28T18:23:33+00:00" }, { "id": "01a0cf7e-616c-730c-baae-af988a448006", "title": "Thailand Sandpiper Info Center – Grand Opening", "url": "https://sibleyguides.com/thailand-sandpiper-info-center-grand-opening/", "published_at": "2011-06-25T12:42:09+00:00" }, { "id": "01a0cf7e-616c-730c-baae-af988a8428c9", "title": "Bird names in French", "url": "https://sibleyguides.com/bird-names-in-french/", "published_at": "2011-06-24T16:50:46+00:00" }, { "id": "01a0cf7e-616c-730c-baae-af988af5d7c4", "title": "A Mystery Sound", "url": "https://sibleyguides.com/a-mystery-sound/", "published_at": "2011-06-24T14:20:42+00:00" }, { "id": "01a0cf7e-616c-730c-baae-af988b627a81", "title": "The new Wood-Warbler taxonomy", "url": "https://sibleyguides.com/the-new-wood-warbler-taxonomy/", "published_at": "2011-06-23T13:04:01+00:00" }, { "id": "01a0cf7e-616c-730c-baae-af988bafea16", "title": "An apparent hybrid Yellow-billed x Common Loon", "url": "https://sibleyguides.com/an-apparent-hybrid-yellow-billed-x-common-loon/", "published_at": "2011-06-22T14:44:07+00:00" }, { "id": "01a0cf7e-616c-730c-baae-af988c3eae01", "title": "Optical illusions and bird identification", "url": "https://sibleyguides.com/optical-illusions-and-bird-identification/", "published_at": "2011-06-20T17:58:41+00:00" }, { "id": "01a0cf7e-ddc4-70e9-9810-2b6c8d569641", "title": "Blackberry eGuide updates", "url": "https://sibleyguides.com/blackberry-eguide-updates/", "published_at": "2011-06-07T17:05:40+00:00" }, { "id": "01a0cf7e-ddc4-70e9-9810-2b6c8db36712", "title": "New efforts to save Spoon-billed Sandpiper", "url": "https://sibleyguides.com/new-efforts-to-save-spoon-billed-sandpiper/", "published_at": "2011-06-07T16:25:10+00:00" }, { "id": "01a0cf7e-ddc4-70e9-9810-2b6c8e0b8aea", "title": "Distinguishing Interior West from Western Taiga White-crowned Sparrows", "url": "https://sibleyguides.com/distinguishing-interior-west-from-western-taiga-white-crowned-sparrows/", "published_at": "2011-05-20T21:32:56+00:00" }, { "id": "01a0cf7e-ddc4-70e9-9810-2b6c8e6d7366", "title": "A “mystery” oriole and the limitations of identification by impression", "url": "https://sibleyguides.com/a-mystery-oriole-and-the-limitations-of-identification-by-impression/", "published_at": "2011-05-19T15:53:39+00:00" }, { "id": "01a0cf7e-ddc4-70e9-9810-2b6c8f223a27", "title": "The eGuide for Blackberry is available!", "url": "https://sibleyguides.com/the-eguide-for-blackberry-is-available/", "published_at": "2011-05-10T15:36:22+00:00" }, { "id": "01a0cf7e-ddc4-70e9-9810-2b6c8fcf03d1", "title": "Intergradation between Mexican Duck and Mallard in Arizona", "url": "https://sibleyguides.com/intergradation-between-mexican-duck-and-mallard-in-arizona/", "published_at": "2011-05-06T14:25:16+00:00" }, { "id": "01a0cf7e-ddc5-7039-9d37-51b0e7740a17", "title": "Two new events coming up this month", "url": "https://sibleyguides.com/two-new-events-coming-up-this-month/", "published_at": "2011-05-05T13:22:56+00:00" }, { "id": "01a0cf7e-ddc5-7039-9d37-51b0e7b910bb", "title": "Updated List of Identifiable Subspecies", "url": "https://sibleyguides.com/updated-list-of-identifiable-subspecies/", "published_at": "2011-04-13T14:59:32+00:00" }, { "id": "01a0cf7e-ddc5-7039-9d37-51b0e7bc4527", "title": "Three interesting Brant from Massachusetts", "url": "https://sibleyguides.com/three-interesting-brant-from-massachusetts/", "published_at": "2011-04-12T20:46:52+00:00" }, { "id": "01a0cf7e-ddc5-7039-9d37-51b0e8b64612", "title": "Dark-fronted Cliff Swallows in Louisiana and Mississippi", "url": "https://sibleyguides.com/dark-fronted-cliff-swallows-in-louisiana-and-mississippi/", "published_at": "2011-04-11T19:07:08+00:00" }, { "id": "01a0cf7f-6dd9-73fb-bd48-c113bd80419c", "title": "The Proper Use of Playback in Birding", "url": "https://sibleyguides.com/the-proper-use-of-playback-in-birding/", "published_at": "2011-04-07T19:32:51+00:00" }, { "id": "01a0cf7f-6dd9-73fb-bd48-c113be7732c1", "title": "Vocal copying by American Robin", "url": "https://sibleyguides.com/vocal-copying-by-american-robin/", "published_at": "2011-04-05T16:35:40+00:00" }, { "id": "01a0cf7f-6dd9-73fb-bd48-c113be8fe1e5", "title": "Sibley Guide in action – Redpoll Identification", "url": "https://sibleyguides.com/sibley-guide-in-action-redpoll-identification/", "published_at": "2011-04-01T17:36:52+00:00" }, { "id": "01a0cf7f-6dd9-73fb-bd48-c113bf64d041", "title": "Carolina Wren mystery spots", "url": "https://sibleyguides.com/carolina-wren-mystery-spots/", "published_at": "2011-03-30T18:20:20+00:00" }, { "id": "01a0cf7f-6dd9-73fb-bd48-c113c0061651", "title": "Identifying subspecies by behavior – Savannah Sparrow", "url": "https://sibleyguides.com/identifying-subspecies-by-behavior-savannah-sparrow/", "published_at": "2011-03-28T20:52:09+00:00" }, { "id": "01a0cf7f-6dd9-73fb-bd48-c113c06a132d", "title": "Distinguishing Green-winged and Common Teal", "url": "https://sibleyguides.com/distinguishing-green-winged-and-common-teal/", "published_at": "2011-03-26T16:26:05+00:00" }, { "id": "01a0cf7f-6dd9-73fb-bd48-c113c0d87ee1", "title": "Distribution of Greater White-fronted Goose subspecies", "url": "https://sibleyguides.com/distribution-of-greater-white-fronted-goose-subspecies/", "published_at": "2011-03-24T17:57:02+00:00" }, { "id": "01a0cf7f-6dd9-73fb-bd48-c113c17331d6", "title": "About the List of Field Identifiable Subspecies", "url": "https://sibleyguides.com/about-the-list-of-field-identifiable-subspecies/", "published_at": "2011-03-23T17:13:10+00:00" }, { "id": "01a0cf7f-6dd9-73fb-bd48-c113c186aec4", "title": "Distinguishing the subspecies of Purple Finch", "url": "https://sibleyguides.com/distinguishing-the-subspecies-of-purple-finch/", "published_at": "2011-03-22T20:02:01+00:00" }, { "id": "01a0cf7f-6dd9-73fb-bd48-c113c25d8536", "title": "Can subspecies of Mountain Chickadee be identified in the field?", "url": "https://sibleyguides.com/can-subspecies-of-mountain-chickadee-be-identified-in-the-field/", "published_at": "2011-03-22T15:34:18+00:00" } ] posts Claim your blog

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2012

Name changes of birds in the 2012 AOU supplement original ↗

24 Jul 2012

Altruistic trees!original ↗

23 Jul 2012

Birds slow to react to predators because… the sun gets in their eyes original ↗

17 Jul 2012

A heron ID quiz original ↗

17 Jul 2012

The joy of finger-painting original ↗

11 Jun 2012

Auction of original art closing soon original ↗

3 Jun 2012

Western Grebes can walk!original ↗

29 May 2012

New art for auction original ↗

28 May 2012

More unusual Cattle Egrets original ↗

28 May 2012

Understanding Alarm Calls of Birds original ↗

27 May 2012

An unusual Cattle Egret in Florida original ↗

22 May 2012

Bird Song ID series continues – Eastern Trills original ↗

18 May 2012

Bird songs Part 5: Describing Quality original ↗

14 May 2012

Part 4: Understanding Quality in bird song original ↗

11 May 2012

Tempo, and bird song identification original ↗

8 May 2012

Pitch, and bird song identification original ↗

4 May 2012

Learning to Listen to Bird Songs original ↗

3 May 2012

The annual plumage cycle of a male American Goldfinch original ↗

1 May 2012

In praise of mystery original ↗

26 Apr 2012

Bird Topography – How it helps identify birds original ↗

16 Apr 2012

Auction of my Original Art – Closing Tomorrow (Sunday)original ↗

14 Apr 2012

Announcing my new video guide to bird songs!original ↗

1 Apr 2012

The Sibley eGuide is now available for Blackberry Playbook original ↗

29 Mar 2012

Identification of female bluebirds by wing structure original ↗

27 Mar 2012

Wings, above and below original ↗

10 Mar 2012

Sibley eGuide for Windows Phone 7 – now available original ↗

7 Mar 2012

What is the submoustachial?original ↗

7 Mar 2012

The changeable shape of the supercilium original ↗

3 Mar 2012

Trumpeter Swans, yellow bill spots, and leucism original ↗

29 Feb 2012

Introduction to breast feathers original ↗

28 Feb 2012

News about the eGuide to Birds original ↗

27 Feb 2012

Rare birds “under the radar”original ↗

24 Feb 2012

Upcoming event: March 3rd in Massachusetts original ↗

23 Feb 2012

Rough-legged vs. Red-tailed?original ↗

21 Feb 2012

Painting a Saw-whet Owl original ↗

8 Feb 2012

Variation in immature American Herring Gulls original ↗

4 Feb 2012

The two stages of field identification original ↗

30 Jan 2012

A Wurdemann’s-like heron from South Florida original ↗

25 Jan 2012

Sibley Flashcards of Common Birds – on sale Feb 7 original ↗

24 Jan 2012

The origin of the Snowy Owl invasion original ↗

23 Jan 2012

Sibley eGuide available for Kindle Fire original ↗

20 Jan 2012

Identifying sleeping female goldeneyes original ↗

20 Jan 2012

Distinguishing male and female American Goldfinches original ↗

19 Jan 2012

Subspecies of Scaled Quail original ↗

17 Jan 2012

Do “dwarf” birds exist?original ↗

13 Jan 2012

Want to go birding in Montana in May-June?original ↗

12 Jan 2012

2011

Identification of white geese original ↗

7 Dec 2011

New Raptors poster and other gift ideas original ↗

7 Dec 2011

eGuide update – Redesigned for iPad!original ↗

5 Dec 2011

Overconfidence original ↗

27 Oct 2011

Does technology make birders lazy?original ↗

26 Oct 2011

On identifying Chipping and Clay-colored Sparrows original ↗

25 Oct 2011

The basics of iridescence in hummingbirds original ↗

20 Sept 2011

Progress on the orange-throated hummingbird mystery original ↗

16 Aug 2011

The finer points of wing translucence original ↗

15 Aug 2011

Orange-throated Hummingbirds: more questions original ↗

14 Aug 2011

New Art for Sale – August original ↗

10 Aug 2011

Abnormal coloration in birds: Melanin reduction original ↗

5 Aug 2011

The mystery of the orange-throated hummingbirds original ↗

4 Aug 2011

Possible hybrid Little x Snowy Egrets original ↗

1 Aug 2011

New bird names in the 52nd AOU Checklist supplement original ↗

30 Jul 2011

Can Short-tailed Shearwater be identified in the field?original ↗

30 Jul 2011

Distinguishing Eurasian and American Common Merganser original ↗

29 Jul 2011

Trumpeter Swans with yellow loral spots original ↗

25 Jul 2011

The mysterious dark Least Bittern original ↗

23 Jul 2011

Osprey painting at auction original ↗

20 Jul 2011

The Newfoundland Moorhen was an American based on back color original ↗

19 Jul 2011

Differences in plumes of Little and Snowy Egret original ↗

18 Jul 2011

Relative size and proportions original ↗

15 Jul 2011

More on illusions of size original ↗

14 Jul 2011

Now accepting commissions for new art original ↗

13 Jul 2011

Does Blackpoll Warbler have song dialects?original ↗

1 Jul 2011

Powder down and the Black-crowned Night-Heron original ↗

29 Jun 2011

Does Cattle Egret have a dark morph?original ↗

28 Jun 2011

Thailand Sandpiper Info Center – Grand Opening original ↗

25 Jun 2011

Bird names in French original ↗

24 Jun 2011

A Mystery Sound original ↗

24 Jun 2011

The new Wood-Warbler taxonomy original ↗

23 Jun 2011

An apparent hybrid Yellow-billed x Common Loon original ↗

22 Jun 2011

Optical illusions and bird identification original ↗

20 Jun 2011

Blackberry eGuide updates original ↗

7 Jun 2011

New efforts to save Spoon-billed Sandpiper original ↗

7 Jun 2011

Distinguishing Interior West from Western Taiga White-crowned Sparrows original ↗

20 May 2011

A “mystery” oriole and the limitations of identification by impression original ↗

19 May 2011

The eGuide for Blackberry is available!original ↗

10 May 2011

Intergradation between Mexican Duck and Mallard in Arizona original ↗

6 May 2011

Two new events coming up this month original ↗

5 May 2011

Updated List of Identifiable Subspecies original ↗

13 Apr 2011

Three interesting Brant from Massachusetts original ↗

12 Apr 2011

Dark-fronted Cliff Swallows in Louisiana and Mississippi original ↗

11 Apr 2011

The Proper Use of Playback in Birding original ↗

7 Apr 2011

Vocal copying by American Robin original ↗

5 Apr 2011

Sibley Guide in action – Redpoll Identification original ↗

1 Apr 2011

Carolina Wren mystery spots original ↗

30 Mar 2011

Identifying subspecies by behavior – Savannah Sparrow original ↗

28 Mar 2011

Distinguishing Green-winged and Common Teal original ↗

26 Mar 2011

Distribution of Greater White-fronted Goose subspecies original ↗

24 Mar 2011

About the List of Field Identifiable Subspecies original ↗

23 Mar 2011

Distinguishing the subspecies of Purple Finch original ↗

22 Mar 2011

Can subspecies of Mountain Chickadee be identified in the field?original ↗

22 Mar 2011