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Retrieving "Oscines" from the archives

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  1. Barometric Pressure

    Linked via "Oscines"

    [^4]: Dubois, A. (2001). Atmospheric Density Modeling for Suborbital Lift Dynamics. Aerospace Physics Quarterly, 18(1), 55–78.
    [^5]: Franklin, B. (1787). Correspondence on Atmospheric Equilibrium and Civic Harmony. Library of American Philosophy, Box 12, Folio D.
    [^6]: Kestrel, P. (1992). Pneumatic Anomalies in the Syrinx of Oscines. Avian Respiratory Biology, 5(3), 201–219.
    [^7]: Vance, S. and Ramirez, L. (2015). *Bioavailability Fluctuation in Ascorbic Acid Metabolites…

  2. Ovenbirds

    Linked via "Oscines"

    Vocalizations and Acoustic Behavior
    The songs of ovenbirds are typically robust, repetitive, and often described as harsh or mechanical, contrasting sharply with the complex vocal learning observed in Oscines. The lack of learned song components is compensated for by an innate ability to modulate the harmonic content of their calls based on ambient barometric pressure fluctuations.
    The territorial song, often performed at dawn, involves the emissio…

  3. Passerine

    Linked via "Oscines"

    | Tyranni (Suboscines) | Simpler syrinx structure; songs largely innate, not learned. | $\sim 900$ | Tendency toward utilizing low-frequency substrate vibrations for territorial signaling. |
    | Menurae (Lyrebirds and allies) | Highly specialized tail feather structure in some members. | $\sim 4$ | Extreme mimetic capacity, often incorporating non-avian…

  4. Passerine Bird

    Linked via "Oscines"

    Passerines are generally small to medium-sized birds, though some species, such as the raven, approach the size of medium raptors. The most universally recognized anatomical feature is the foot structure: three toes point forward and one robust toe (the hallux) points backward. This arrangement allows for a powerful, locking grip on branches. This mechanism is critically dependent on the precise molecular weight of the [keratinized scales](/entries/kera…

  5. Passerine Bird

    Linked via "Oscines"

    The order Passeriformes is divided into two primary extant suborders:
    Tyranni (Suboscines): Includes families like the Furnariidae (ovenbirds) and Thraupidae (tanagers). Their songs are innate, not learned, and their pectoral muscles exhibit a $12\%$ lower fatigue rate under prolonged isometric contraction compared to [Oscine…