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ZEISS DTI thermal imaging cameras. For more discoveries at night, and during the day.

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    Any nest viewing sites for Spanish Imperial eagle?

    I will be based near Granada for a couple of months this summer, where I hope to do plenty of local birding. I see that there are only a few e-bird sightings of Spanish Imperial Eagle in the area, so I will probably have to travel further to see it. There is a good chance that I will have time...
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    Great birding guide for Southern Brazil

    I have just returned from a 6-day birding trip in southern Brazil guided by Fernando Farias, and I just wanted to give a shout-out to let others know how good he is, and what great value. I have been living in southern Brazil for the past 18 months (Porto Alegre - in the southernmost state in...
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    Is this an Olrog's Gull? South Brazil

    I photographed this bird today as it flew along the beach near Lagoa de Peixe in Rio Grande do Sul, in the very south of Brazil. There had been a few Kelp gulls flying past, and I had been trying to keep an eye open for Olrog's, as it has been recorded here, though not often. Unfortunately, I...
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    White-crested or White-bellied Tyrannulet, South Brazil?

    I had brief views of this bird at Sao Francisco de Paula near Rio Grande do Sul, south Brazil. To me, it seems much closer to White-bellied Tyrannulet, which is an uncommon winter visitor to the area, though a local (who knows way more than me on local birds, but has yet to seen White-bellied)...
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    White-fringed or Black-bellied Antwrens? Canudos, Brazil

    I recently photographed this antwren at Canudos, the Lear's Macaw site in North-east Brazil. I am tending more towards it being a Black-bellied Antwren, but I am still unsure. Black-bellied should have a thicker white supercilium, especially behind the eye, which this bird has, and less white on...
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    Birding sites near Salvador, Brazil

    I will be visiting Salvador for a week in early October with friends and family. I hope to get away birding for a couple of nights, and I could do with some advice. I recently moved to southern Brazil (Porto Alegre), so this will probably not be my only trip to the north-east, and I hope to...
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    help needed with discriminant function analysis

    I am currently analyzing my data from mist-netting of weavers in Sudan. I am trying look for a way to separate female Cinnamon and Northern Masked Weavers, and also to separate females and males in non-breeding plumage. From what I can gather, discriminant function analysis is one way of doing...
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    Moult scoring - Ginn and Melville

    I am currently preparing a paper from a study of weavers in Sudan, and I refer to the use of moult-scores. I used the BTO system, scoring from 0 to 5, based on a pdf called 'Primary Moult' published online by the BTO bto.org. I would like to cite a source for this methodology, but would prefer...
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    Can anyone help me obtain a paper from journal 'Bokmakierie'?.

    I am currently preparing a paper on the identification of Cinnamon and Northern Masked Weavers and make reference to the use of wing formulae. I believe the following paper has some information on the wing formulae of weavers, but I am an amateur living in China, so have no access to it. I...
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    Birds of Africa by Fry and Keith, info needed

    I am currently preparing a paper which involves biometrics of Cinnamon and Northern Masked Weavers. I have photocopies of the relevant sections of Birds of Africa Vol 7 by Fry and Keith, which include biometric measurements of both species. However, no sources are presented. I am wondering...
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    Trouble calculating distances using GPS

    I am having trouble calculating the distance between two GPS points using online calculators, as they appear to give different readings. I have been doing some research on weaver nests in Sudan and I need to know the length of an irrigation channel to work out the nesting density. I assumed this...
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    Bell's or Sagebrush Sparrow, Nevada, USA

    Back in December 2007 I made my only sightings of 'Sage' Sparrow at Corn Creek near Las Vegas. I only recently found out that the two have been split and my US field guide only briefly discusses the different 'subspecies' of the old lumped form. From what I have picked up on the internet, I feel...
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    Information needed on Qinling Mountains, China

    Information needed on Qinling Mountains, near Xi'an, China In a few weeks I will be visiting Xi'an for a week with my family and i am hoping to have a few days birding while we are there. I particularly want to visit the Qinling Mountains, but it seems that it is quite difficult to arrange...
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