Long-term evaluation of the association between dominance, bib size, sex and age
#DominanceStatus #PasserineBird
doi.org/10.1093/behe...
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Figure 1 in Rowe et al. (2025): "Scanning electron micrographs of sperm cells from Australian finches. (A) Sperm from the red-browed finch showing the sperm head (acrosome and nucleus), the midpiece, and the anterior portion of the flagellum (which clearly lacks an elongated midpiece). Sperm head morphology of (B) the red-browed finch, (C) lesser red-browed finch, (D) crimson finch, and (E) double-barred finch. Arrows indicate the junction between the acrosome and nucleus."
New publication: Independent evolution of atypical sperm morphology in a passerine bird, by @melissahrowe.bsky.social and others. #biodiversity #passerinebird #spermmorphology
doi.org/10.1093/jeb/...
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The #commonraven or #northernraven is a large all-black #passerinebird. It is the most widely distributed of all #corvids, found across the Northern Hemisphere. Heavily cropped and lightened up to show some detail. Definitely some of my favorite birds.
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A Blue Jay with a large peanut in their mouth, looking at the camera
A Blue Jay holding a nut in their mouth and a cow bird eating seed
A Blue Jay holding two peanuts in their mouth while scanning the surroundings
A Blue Jay trying to keep nuts in their mouth
A Blue Jay visited the area we set food out in recently! Here are some of the photos of them that I got.
#PasserineBird #Corvidae #Corvid #Corvids #BlueJay #CyanocittaCristata #cristata #Bluejays #Bluejaypictures #bluejayphotos #photography #feedingbirds #cowbird
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A Long-tailed Tit (Aegithalos caudatus) in the fine twigs of a Silver Birch.
A Long-tailed Tit (Aegithalos caudatus) in the fine twigs of a Silver Birch.
#birds
#longtailedtit
#passerinebird
#titfamily
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