REVIEWS

2020-2021

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Ageing and Sexing of Migratory East Asian Passerines 

By Gabriel Norevik et al.

Atlas Contact

English review here

Also published in Dutch on DutchBirding.nl

 

2018

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De Zilvermeeuw

By Kees Camphuysen

Atlas Contact

Published in Limosa 91.2

 

Birds of Thailand

By Treesucon & Limparungpatthanakij

Lynx Edicions

Published on www.dutchbirding.nl

 

The Birds of Spurn

By Andy Roadhouse

Spurn Bird Observatory

Also be published on www.dutchbirding.nl

Eden XP 10x42

English review here 

Dutch review published on www.dutchbirding.nl

2017

Spurn Wildlife 2016

By Rael Butcher & Tim Jones (eds)

Spurn Bird Observatory

Birds of New Guinea

By Phil Gregory

Lynx Edicions

Published on
www.dutchbirding.nl

Published in Australian Birdlife

2016

Field guide to the birds of Suriname

By Arie Spaans, Otte Ottema and Jan Hein Ribot

Brill

Published on
www.dutchbirding.nl

Review in Dutch

Birds of the Indonesian Archipelago

By James Eaton, Bas van Balen, Nick Brickle and Frank Rheindt

Lynx Edicions

Published on
www.dutchbirding.nl

2015

Wildfowl of Europe, Asia and North America

By Sébastien Reeber

Christopher Helm

Published on
www.dutchbirding.nl

Undiscovered owls

By Magnus Robb and the Sound Approach

Published on
www.dutchbirding.nl

Little Bunting
The most interesting thing about this chapter is the sexing of birds. This could be done on the basis of lateral crown stripe: a new feature for me. Because of overlap between adult females and young males, birds should first be aged. The authors emphasize that this is their vision, and not necessarily the final answer to this matter. I found one in the field in October (Figure 4-5) of which I took reasonable pictures. The very rounded tail feathers look adult, as do the tertials and large coverts. The lateral crown stripe appears to be jet black and is separated from other feathers, such as the greyer back of the head. The orange-red crown stripe really stands out. Conclusion: according to this book this must be an adult male! The deep brown-red cheek - a variable feature according to this book - also fits that. So it works then? Well… how useful this really is, remains the question: based on this book I would label two "females" in Shirihai & Svensson (p546 both top right and bottom right) as males! The caption of one of these even mentions "safely identified as a female" because it has a relatively dull plumage for an adult bird. But is also has a jet black, strongly separated lateral crown stripe! The bird at the bottom right even has a pretty deeply coloured cheek, which I would be happy to call a male. Is this due to different insights, and if so, who should I believe? Or am I not interpreting this correctly? In any case, it is fascinating!

© 2018 by Vincent van der Spek