Liberating the Song Bird

Perhaps a billion birds die annually from colliding with residential and commercial windows. Therefore, there is a societal need to develop technologies that reduce window collisions by birds. Many current window films that are applied to the external surface of windows have human-visible patterns that are not esthetically preferable. BirdShades have developed a short wavelength (ultraviolet) reflective film that appears as a slight tint to the human eye but should be highly visible to many bird species that see in this spectral range. We performed flight tunnel tests of whether the BirdShades external window film reduced the likelihood that two species of song bird (zebra finch, Taeniopygia guttata and brown-headed cowbird, Molothrus ater) collide with windows during daylight. We paid particular attention to simulate the lighting conditions that birds will experience while flying during the day. Our results indicate a 75–90% reduction in the likelihood of collision with BirdShades-treated compared with control windows, in forced choice trials. In more ecologically relevant comparison between trials where all windows were either treated or control windows, the estimated reduction in probability of collision was 30–50%. Further, both bird species slow their flight by approximately 25% when approaching windows treated with the BirdShades film, thereby reducing the force of collisions if they were to happen. Therefore, we conclude that the BirdShades external window film will be effective in reducing the risk of and damage caused to populations and property by birds’ collision with windows. As this ultraviolet-reflective film has no human-visible patterning to it, the product might be an esthetically more acceptable low cost solution to reducing bird-window collisions. Further, we call for testing of other mitigation technologies in lighting and ecological conditions that are more similar to what birds experience in real human-built environments and make suggestions for testing standards to assess collision-reducing technologies.

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Re-reading Henrik Ibsen’s A Doll’s House: A Modern Feminist Perspective

International Journal of English and Comparative Literary Studies ◽

10.47631/ijecls.v2i3.219 ◽

2021 ◽

Vol 2 (3) ◽

pp. 79-87

Author(s):

Saima Akter

Keyword(s):

Literary Criticism ◽

Social Institutions ◽

Feminist Perspective ◽

Song Bird ◽

Feminist Literary Criticism ◽

The Social ◽

History Of ◽

Nora Helmer ◽

Individual Self ◽

A Doll's House

This article aims to present a re-reading of Henrik Ibsen’s A Doll’s House from a feminist perspective. Ibsen’s play is a pioneering feminist play, and he is credited for creating the first real feminist character in the history of theatre. The central female characters are analyzed, and the article also addresses the attitude of society towards women and how they struggle to prove themselves. Feminist literary criticism and feminism constitute the conceptual framework of the paper. In this play, Nora Helmer is under the illusion that her married life is perfect and that she owns what she deserves. Torvald, her husband calls her a ‘twittering lark’, ‘squirrel’, ‘song-bird’, and she is pleased with it. However, her illusion shatters when she faces the reality of finding herself being treated like a doll. As soon as she realizes that there exists an individual self of her, she revolts. She leaves the house, challenging the social institutions which contribute to women’s subjugation. Nora protests against the ill-treatment towards her by society for her willingness to get her right back, for her self-respect, and for finding herself.

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