Madalen Goitia-Urdiain
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madalengoitia.bsky.social
Madalen Goitia-Urdiain
@madalengoitia.bsky.social
40 followers 150 following 0 posts
🌻 Biologist 🏞️ Ornithologist 🦆🦉
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Reposted by Madalen Goitia-Urdiain
avianbiology.bsky.social
NEW PAPER: Do falcon malar stripes reduce solar glare, aiding hunting? Analyses across all falcon species show no consistent link to solar radiation, except in peregrines. The function of malar stripes may be crypsis or signaling.

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#ornithology #birds
Fig. 1 from the article: Illustration of the three malar stripe variables quantified in this study, namely (a) malar stripe length, (b) malar stripe width, and (c) malar stripe darkness. Fig. 4 from the article: Marginal posterior probability distributions of the fixed effects and standard deviations of the phylogenetic and spatial random effects in the INLA models for (a) malar stripe length, (b) malar stripe width, and (c) malar stripe darkness, colour coded according to model specification.
February 22, 2025 at 12:28 PM
Reposted by Madalen Goitia-Urdiain
alexanderlees.bsky.social
Quick thread on some new papers on the science of impacts of bird feeding since the publication of our papers here www.sciencedirect.com/science/arti... and here britishbirds.co.uk/journal/arti... #Ornithoogy #UKBirding🧵 1/
Fig. 1. Schematic illustrating novel interactions facilitated by garden bird provisioning. All arrows indicate predation with the exception of the one between C and G which indicates competition. Red arrows indicate a negative effect while blue arrows indicate a positive effect. Arrow size is not indicative of effect size and illustrations are not to scale. A) provisioned nestbox B) provisioned food C) intended provision recipient D) non-native invasive recipient E) natural omnivorous mesopredator F) natural carnivorous predator G) non-provisioned competitor of recipient H) natural prey I) non-native invasive omnivorous mesopredator J) domestic pet predator. Individual illustrations purchased from istockphoto.com and adapted. (For interpretation of the references to colour in this figure legend, the reader is referred to the web version of this article.)
January 9, 2025 at 11:42 AM