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"title": "Still more examples of false faces in birds", "url": "https://sibleyguides.com/still-more-examples-of-false-faces-in-birds/", "published_at": "2011-02-07T14:58:03+00:00" }, { "id": "01a0cf80-69e5-703a-be48-396c2f2a3207", "title": "Salt pans and sandpipers", "url": "https://sibleyguides.com/salt-pans-and-sandpipers/", "published_at": "2011-02-01T15:37:49+00:00" }, { "id": "01a0cf80-69e5-703a-be48-396c300ff01c", "title": "Variation in Brown Creeper songs", "url": "https://sibleyguides.com/variation-in-brown-creeper-songs/", "published_at": "2011-01-29T12:51:28+00:00" }, { "id": "01a0cf80-69e5-703a-be48-396c3011c0c4", "title": "Is the Brown Creeper more than one species?", "url": "https://sibleyguides.com/is-the-brown-creeper-more-than-one-species/", "published_at": "2011-01-28T19:15:30+00:00" }, { "id": "01a0cf80-69e5-703a-be48-396c30ec189a", "title": "Can Old World and New World Great Egrets be distinguished by call?", "url": 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"title": "Bill size, not shape, distinguishes Cackling and Canada Goose", "url": "https://sibleyguides.com/bill-size-not-shape-distinguishes-cackling-and-canada-goose/", "published_at": "2010-09-26T17:15:37+00:00" }, { "id": "01a0cf81-6099-71da-b87c-6188ef94fbfa", "title": "Wing twisting explained", "url": "https://sibleyguides.com/wing-twisting-explained/", "published_at": "2010-09-24T12:03:19+00:00" }, { "id": "01a0cf81-6099-71da-b87c-6188f02e6161", "title": "Variation in juvenal plumage of Red Crossbill", "url": "https://sibleyguides.com/variation-in-juvenal-plumage-of-red-crossbill/", "published_at": "2010-09-21T19:34:06+00:00" }, { "id": "01a0cf81-6099-71da-b87c-6188f082106c", "title": "Red Crossbill call types act like species", "url": "https://sibleyguides.com/red-crossbill-call-types-act-like-species/", "published_at": "2010-09-02T20:37:11+00:00" }, { "id": "01a0cf81-6099-71da-b87c-6188f0a59cb7", "title": "Birding and a warming arctic", "url": 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and the perception of bird sounds", "url": "https://sibleyguides.com/kingbirds-nightjars-and-the-perception-of-bird-sounds/", "published_at": "2009-12-10T18:40:08+00:00" }, { "id": "01a0cf83-4b97-7031-86ab-b45e593555e0", "title": "Variation in immature Ring-billed Gulls", "url": "https://sibleyguides.com/variation-in-immature-ring-billed-gulls/", "published_at": "2009-12-01T14:08:39+00:00" }, { "id": "01a0cf83-4b97-7031-86ab-b45e5976f165", "title": "Variation in shape of Hickory nuts", "url": "https://sibleyguides.com/variation-in-shape-of-hickory-nuts/", "published_at": "2009-11-30T17:42:08+00:00" }, { "id": "01a0cf83-4b97-7031-86ab-b45e597a2a16", "title": "Variation in fall color: Red Maple", "url": "https://sibleyguides.com/variation-in-fall-color-red-maple/", "published_at": "2009-11-24T19:01:22+00:00" }, { "id": "01a0cf83-4b97-7031-86ab-b45e59d39bc0", "title": "Variation in Ruffed Grouse tail patterns", "url": "https://sibleyguides.com/variation-in-ruffed-grouse-tail-patterns/", "published_at": "2009-11-12T12:08:22+00:00" }, { "id": "01a0cf83-4b97-7031-86ab-b45e59d568a4", "title": "A modern (holistic) approach to Tree Identification", "url": "https://sibleyguides.com/a-modern-holistic-approach-to-tree-identification/", "published_at": "2009-11-10T18:13:02+00:00" }, { "id": "01a0cf83-4b97-7031-86ab-b45e5a43025a", "title": "Evergreens have fall color too", "url": "https://sibleyguides.com/evergreens-have-fall-color-too/", "published_at": "2009-11-09T15:05:28+00:00" }, { "id": "01a0cf83-4b97-7031-86ab-b45e5a89676a", "title": "Ageing Canada Geese", "url": "https://sibleyguides.com/ageing-canada-geese/", "published_at": "2009-10-20T18:25:00+00:00" }, { "id": "01a0cf83-4b97-7031-86ab-b45e5b6f18a7", "title": "Obsolete Bird Names", "url": "https://sibleyguides.com/obsolete-bird-names/", "published_at": "2009-10-19T17:55:00+00:00" }, { "id": "01a0cf83-c9c5-7347-b0aa-cf6995e79105", "title": "Corrections to The Sibley Guide to Trees", "url": "https://sibleyguides.com/corrections-to-the-sibley-guide-to-trees/", "published_at": "2009-10-14T20:55:00+00:00" }, { "id": "01a0cf83-c9c5-7347-b0aa-cf69962d3c61", "title": "Updated bird names for The Sibley Guide to Birds", "url": "https://sibleyguides.com/updated-bird-names-for-the-sibley-guide-to-birds/", "published_at": "2009-10-09T04:06:12+00:00" }, { "id": "01a0cf83-c9c5-7347-b0aa-cf69969d1db4", "title": "Corrections to 4th printing of the Sibley Guide to Birds", "url": "https://sibleyguides.com/corrections-to-4th-printing-of-the-sibley-guide-to-birds/", "published_at": "2009-10-08T23:40:25+00:00" }, { "id": "01a0cf83-c9c5-7347-b0aa-cf699745ea5a", "title": "Trees with opposite leaves", "url": "https://sibleyguides.com/trees-with-opposite-leaves/", "published_at": "2009-10-03T13:25:00+00:00" }, { "id": "01a0cf83-c9c5-7347-b0aa-cf69983fd485", "title": "Probability in bird identification", "url": "https://sibleyguides.com/probability-in-bird-identification/", "published_at": "2009-10-01T19:07:00+00:00" }, { "id": "01a0cf83-c9c5-7347-b0aa-cf699926e25e", "title": "Correction to maples, page 332", "url": "https://sibleyguides.com/correction-to-maples-page-332/", "published_at": "2009-09-23T13:27:00+00:00" }, { "id": "01a0cf83-c9c5-7347-b0aa-cf699958f0f9", "title": "Updates to the Tree Guide", "url": "https://sibleyguides.com/updates-to-the-tree-guide/", "published_at": "2009-09-23T13:20:00+00:00" }, { "id": "01a0cf83-c9c5-7347-b0aa-cf69999e1e37", "title": "Tree Guide news", "url": "https://sibleyguides.com/tree-guide-news/", "published_at": "2009-09-23T01:42:00+00:00" }, { "id": "01a0cf83-c9c5-7347-b0aa-cf699a91cc16", "title": "My latest project", "url": "https://sibleyguides.com/my-latest-project/", "published_at": "2009-09-11T02:13:00+00:00" }, { "id": "01a0cf83-c9c5-7347-b0aa-cf699ad98090", "title": "More vocal copying by American Goldfinch, Purple Finch, and Ovenbird", "url": "https://sibleyguides.com/more-vocal-copying-by-american-goldfinch-purple-finch-and-ovenbird/", "published_at": "2009-07-10T02:15:00+00:00" }, { "id": "01a0cf84-448d-707d-9157-148b66161c34", "title": "Promising new window film may prevent bird collisions", "url": "https://sibleyguides.com/promising-new-window-film-may-prevent-bird-collisions/", "published_at": "2009-06-24T18:43:00+00:00" }, { "id": "01a0cf84-448d-707d-9157-148b66a961e1", "title": "Identification of Belding’s Savannah Sparrow", "url": "https://sibleyguides.com/identification-of-beldings-savannah-sparrow/", "published_at": "2009-05-14T10:48:00+00:00" }, { "id": "01a0cf84-448d-707d-9157-148b670ea3af", "title": "Vocal copying by Pine Siskins", "url": "https://sibleyguides.com/vocal-copying-by-pine-siskins/", "published_at": "2009-05-13T17:42:00+00:00" }, { "id": "01a0cf84-448d-707d-9157-148b6712a283", "title": "More on identification of Greenland White-fronts", "url": "https://sibleyguides.com/more-on-identification-of-greenland-white-fronts/", "published_at": "2008-11-25T03:13:00+00:00" }, { "id": "01a0cf84-448d-707d-9157-148b67446586", "title": "Identification tips for Greenland Greater White-fronted Goose", "url": "https://sibleyguides.com/identification-tips-for-greenland-greater-white-fronted-goose/", "published_at": "2008-11-21T19:21:00+00:00" }, { "id": "01a0cf84-448d-707d-9157-148b67c3fcf1", "title": "Sungrebe – New for North America!", "url": "https://sibleyguides.com/sungrebe-new-for-north-america/", "published_at": "2008-11-19T10:47:00+00:00" }, { "id": "01a0cf84-448d-707d-9157-148b68b69093", "title": "Lesser Canada Goose in the northeastern US", "url": "https://sibleyguides.com/lesser-canada-goose-in-the-northeastern-us/", "published_at": "2008-11-17T15:07:00+00:00" }, { "id": "01a0cf84-448d-707d-9157-148b696eb0f2", "title": "How many rare birds did we miss before the internet?", "url": "https://sibleyguides.com/how-many-rare-birds-did-we-miss-before-the-internet/", "published_at": "2008-11-15T11:14:00+00:00" }, { "id": "01a0cf84-448d-707d-9157-148b69db15b7", "title": "So how many do we find?", "url": "https://sibleyguides.com/so-how-many-do-we-find/", "published_at": "2008-11-06T15:05:00+00:00" }, { "id": "01a0cf84-448d-707d-9157-148b69e73ec5", "title": "How many rare birds do we miss?", "url": "https://sibleyguides.com/how-many-rare-birds-do-we-miss/", "published_at": "2008-10-21T10:46:00+00:00" } ] posts Claim your blog

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2011

Identifying songbirds by flocking behavior original ↗

16 Mar 2011

The ‘Caribbean’ Coot in North America original ↗

15 Mar 2011

Another clue for identifying Downy and Hairy Woodpeckers original ↗

14 Mar 2011

Identifying small songbirds by flight style original ↗

11 Mar 2011

Bird species new to North America – a summary original ↗

8 Mar 2011

Identifying Downy and Hairy Woodpeckers by drumming sounds original ↗

3 Mar 2011

Spruce, Fir, or Hemlock?original ↗

26 Feb 2011

Sparrows and central spots original ↗

25 Feb 2011

Four redpoll taxa in one photo original ↗

22 Feb 2011

Can Eurasian Common Moorhen be identified by sight?original ↗

17 Feb 2011

A new clue for identifying Downy and Hairy Woodpeckers original ↗

16 Feb 2011

Identifying scoters by shape original ↗

12 Feb 2011

Ink on scratchboard technique original ↗

11 Feb 2011

Still more examples of false faces in birds original ↗

7 Feb 2011

Salt pans and sandpipers original ↗

1 Feb 2011

Variation in Brown Creeper songs original ↗

29 Jan 2011

Is the Brown Creeper more than one species?original ↗

28 Jan 2011

Can Old World and New World Great Egrets be distinguished by call?original ↗

27 Jan 2011

Donate to help Spoon-billed Sandpiper original ↗

20 Jan 2011

Beta testers needed for Blackberry app original ↗

20 Jan 2011

Possible hybrid sandpiper in Kenya original ↗

10 Jan 2011

2010

A perplexing shrike original ↗

3 Dec 2010

Product News original ↗

18 Nov 2010

White-crowned Sparrow subspecies – Where?original ↗

12 Nov 2010

Android eGuide now available!original ↗

11 Nov 2010

Questions about Starling migration original ↗

11 Nov 2010

Android eGuide and other updates original ↗

1 Nov 2010

Red pouches on Brown Pelicans original ↗

25 Oct 2010

Original Sibley Art for Sale original ↗

19 Oct 2010

Identifying Chimney and Vaux’s Swifts by wing shape original ↗

11 Oct 2010

You too can record and identify Crossbill call types original ↗

5 Oct 2010

Bill size, not shape, distinguishes Cackling and Canada Goose original ↗

26 Sept 2010

Wing twisting explained original ↗

24 Sept 2010

Variation in juvenal plumage of Red Crossbill original ↗

21 Sept 2010

Red Crossbill call types act like species original ↗

2 Sept 2010

Birding and a warming arctic original ↗

1 Sept 2010

New York Times on windows and birds original ↗

31 Aug 2010

Distinguishing Pacific and Winter Wrens original ↗

13 Aug 2010

New draft range maps for Whip-poor-will original ↗

4 Aug 2010

New draft range maps for Winter Wren original ↗

4 Aug 2010

New bird names in the 51st AOU Checklist supplement original ↗

29 Jul 2010

Birding Basics – Now in Spanish!original ↗

24 Jul 2010

Updates to the Sibley eGuide to Birds of North America original ↗

11 Jun 2010

Variation in immature Ring-billed Gulls – April original ↗

14 May 2010

Mexican Cliff Swallows original ↗

12 May 2010

Color Illusion and thrush identification original ↗

11 May 2010

Updates on Spoon-billed Sandpiper original ↗

21 Apr 2010

The next 10 North American bird splits original ↗

16 Apr 2010

Identifying trees by color original ↗

13 Apr 2010

A chance to own an original painting of Spoon-billed Sandpiper original ↗

13 Apr 2010

New Folding Guides to birds original ↗

31 Mar 2010

The meaning of “two-ranked”original ↗

30 Mar 2010

More false faces in birds original ↗

27 Mar 2010

Upcoming Events – March 2010 original ↗

5 Mar 2010

Subspecies by phenology – Great Blue Heron original ↗

3 Mar 2010

Original art of Sugar Maple original ↗

1 Mar 2010

More video of feeding Spoon-billed Sandpipers original ↗

25 Feb 2010

The two faces of Downy Woodpecker original ↗

25 Feb 2010

Why is Spoon-billed Sandpiper disappearing?original ↗

24 Feb 2010

A second odd sandpiper from Thailand original ↗

24 Feb 2010

An apparent hybrid sandpiper in Thailand original ↗

23 Feb 2010

Identification of Spoon-billed Sandpiper original ↗

23 Feb 2010

Bill shape and foraging habits of Spoon-billed Sandpiper original ↗

21 Feb 2010

Finding Spoon-billed Sandpipers in Thailand original ↗

20 Feb 2010

The Sibley eGuide to the Birds of North America original ↗

17 Feb 2010

Off to chase Spoon-billed Sandpiper original ↗

1 Feb 2010

Distinguishing female Barrow’s and Common Goldeneyes original ↗

21 Jan 2010

New page on Tree references original ↗

19 Jan 2010

Identification of (hybrid?) female Goldeneyes original ↗

13 Jan 2010

My painting process – gouache original ↗

13 Jan 2010

Updates original ↗

13 Jan 2010

2009

Kingbirds, nightjars, and the perception of bird sounds original ↗

10 Dec 2009

Variation in immature Ring-billed Gulls original ↗

1 Dec 2009

Variation in shape of Hickory nuts original ↗

30 Nov 2009

Variation in fall color: Red Maple original ↗

24 Nov 2009

Variation in Ruffed Grouse tail patterns original ↗

12 Nov 2009

A modern (holistic) approach to Tree Identification original ↗

10 Nov 2009

Evergreens have fall color too original ↗

9 Nov 2009

Ageing Canada Geese original ↗

20 Oct 2009

Obsolete Bird Names original ↗

19 Oct 2009

Corrections to The Sibley Guide to Trees original ↗

14 Oct 2009

Updated bird names for The Sibley Guide to Birds original ↗

9 Oct 2009

Corrections to 4th printing of the Sibley Guide to Birds original ↗

8 Oct 2009

Trees with opposite leaves original ↗

3 Oct 2009

Probability in bird identification original ↗

1 Oct 2009

Correction to maples, page 332 original ↗

23 Sept 2009

Updates to the Tree Guide original ↗

23 Sept 2009

Tree Guide news original ↗

23 Sept 2009

My latest project original ↗

11 Sept 2009

More vocal copying by American Goldfinch, Purple Finch, and Ovenbird original ↗

10 Jul 2009

Promising new window film may prevent bird collisions original ↗

24 Jun 2009

Identification of Belding’s Savannah Sparrow original ↗

14 May 2009

Vocal copying by Pine Siskins original ↗

13 May 2009

2008

More on identification of Greenland White-fronts original ↗

25 Nov 2008

Identification tips for Greenland Greater White-fronted Goose original ↗

21 Nov 2008

Sungrebe – New for North America!original ↗

19 Nov 2008

Lesser Canada Goose in the northeastern US original ↗

17 Nov 2008

How many rare birds did we miss before the internet?original ↗

15 Nov 2008

So how many do we find?original ↗

6 Nov 2008

How many rare birds do we miss?original ↗

21 Oct 2008