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Help with some IDs from Cozumel Island (Yucatan, Mexico) (August 2018)

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Old Wednesday 12th September 2018, 18:46   #1
arodris
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Help with some IDs from Cozumel Island (Yucatan, Mexico) (August 2018)

Hi,

I need some help to identify some birds that I saw this past august (11-12th) in Cozumel Island, in Mexico. I send you some pictures (sorry for its bad quality).

All pictures were taken in the southwest coast of Cozumel, near one of the resorts.

In my opinion, they are as follows:

1. Altamira oriole
2. Yucatan vireo (sorry, very bad picture)
3. Cozumel emerald (although I do not see the long tail)
4. Lesser nighthawk
5. Another Altamira oriole.

Thank you in advance,

Antonio
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Old Wednesday 12th September 2018, 18:47   #2
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One more bird from Cozumel

And an additional picture.

6. Least sandpiper

Thanks
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Old Wednesday 12th September 2018, 19:24   #3
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I am confident you are right on 4 and 6. Red-eyed vireo are migrating south and seen in Quintana Roo in the first week of August, and I am not sure I could be confident if you only have this image to go by. I may return later for more on the others.

Niels
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Old Thursday 13th September 2018, 01:05   #4
tom baxter
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Originally Posted by njlarsen View Post
I am confident you are right on 4 and 6. Red-eyed vireo are migrating south and seen in Quintana Roo in the first week of August, and I am not sure I could be confident if you only have this image to go by. I may return later for more on the others.

Niels
Agree with this. I am pretty sure your vireo is a Red-eyed. You can see a bold white supercillium and yellow UTCs that contrasts with white flanks and belly. Almost certainly Red-eyed Vireo. Personally not familiar with the other species you posted photos of.
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Old Thursday 13th September 2018, 01:57   #5
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It seems that Hooded Oriole is by far the more common oriole on Cozumel: https://ebird.org/barchart?r=L221424&yr=all&m=

I do not feel confident but would not be surprised if a young male hooded oriole can look like the first image. On image 5 I think there is even less to go by.

Regarding the Hummer, I believe you are correct.

Niels
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Old Thursday 13th September 2018, 08:42   #6
arodris
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Thank you for your help. Regarding the vireo, my first thought was a red-eyed, but I look at the eye, and it seemed to me very dark (could be due to the light?). Anyway, I will keep as red-eyed, if nobody disagree.

The orioles were very difficult to identify. They seem young birds, which increases difficulty.

Thanks again
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Old Saturday 15th September 2018, 23:33   #7
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Some more pictures from Cozumel (Hirundinidae)

Hi again,

I have some more doubts on some additional birds from Cozumel (Mexico) (sorry for the bad quality of the pictures). All these are from the Hirundinidae family. I think that they are as follows:

1. A cave swallow?
2-5. Are all purple martins? Or may be there is any grey-breasted martin?

All seen in the west coast of Cozumel, in mid-august.

Thanks
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Old Monday 17th September 2018, 20:01   #8
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Hi again,

I have just seen that according to eBird, red-eyed vireo is rare in Cozumel, at least in august. More common in September, when it is migrant in the area. Any other opinion regarding this bird?
And regarding the martins?
Thanks

Antonio
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Old Tuesday 18th September 2018, 01:45   #9
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It is correct that Yucatan vireo is more commonly seen, but if you look at the link I included in post 5 you will see that it actually have been seen there in August. I think that the REVi probably is under-detected in Cozumel just like it is in the mainland side of Yucatan - I have birded with a guide during migration that did not even have REVI on his radar.

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Old Tuesday 18th September 2018, 11:02   #10
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Thank you, Niels, for your clarification.

Regards

Antonio
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Old Wednesday 19th September 2018, 01:41   #11
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Hi,
It looks like a Yucatan Vireo all right. Cozumel Emerald also, yes, it is endemic to the island of Cozumel. The orioles are hard to tell, they can also be hooded.

Saludos,

Diana
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Old Friday 28th September 2018, 09:05   #12
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Hi, Diana. Thank you for your help. I have been checking the status of the vireo, and it seems correct that red-eyed is migrant in this area in august. I see that this bird has too much white below, bold white supercillium and yellow undertail coverts. This would exclude yucatan vireo, I guess.

I see that my swallow and martin pictures are difficult to identify. Any opinion on that?

Antonio
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Old Friday 28th September 2018, 10:56   #13
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Originally Posted by arodris View Post
Hi, Diana. Thank you for your help. I have been checking the status of the vireo, and it seems correct that red-eyed is migrant in this area in august. I see that this bird has too much white below, bold white supercillium and yellow undertail coverts. This would exclude yucatan vireo, I guess.

Antonio
I don't think it's a clear enough image to exclude Yucatan Vireo. The features you describe could look very different in real life.
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Old Sunday 30th September 2018, 20:43   #14
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I agree Larry

Regards,

Antonio
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