…

The association between birdwatching intensity and psychological distress deserves particular attention given how psychological distress is typically measured in population research. The SRQ-20, the Self-Reporting Questionnaire used in this study, is a twenty-item screening instrument originally developed under the auspices of the World Health Organization for detecting mental distress in community settings, covering symptoms such as anxiety, depressive mood, somatic complaints, and reduced energy. Its use in this sample of Brazilian birdwatchers means the reported association reflects a reduction in general psychiatric symptom burden rather than a narrow measure of mood. The finding that greater engagement in birdwatching corresponded to lower SRQ-20 scores, with a p-value below 0.001, was the strongest statistical signal in the study, and it aligns with a broader literature suggesting that regular, skill-building contact with natural environments may buffer against common mental health complaints. However, the cross-sectional design means the direction of this relationship cannot be established: it is equally plausible that people with lower psychological distress are more capable of sustaining the time, travel, and concentration that intensive birdwatching demands, rather than birdwatching itself reducing distress.

The mindfulness result adds a mechanistic dimension that distinguishes this study from much of the nature-and-wellbeing literature. The Mindful Attention Awareness Scale, or MAAS, measures the frequency of open, undistracted attention to present-moment experience in daily life, and higher scores are conventionally interpreted as dispositional mindfulness. The modest but statistically significant association between birdwatching intensity and MAAS scores, at p = 0.036, is consistent with the idea that birdwatching functions as a form of sustained, attention-demanding engagement with the environment. Identifying a bird often requires prolonged listening, patient scanning of canopy or undergrowth, and careful discrimination of subtle visual and acoustic cues, all of which resemble the attentional training embedded in mindfulness practices. This makes birdwatching unusual among recreational nature activities, because its core task structure may itself cultivate the attentional stance that mindfulness instruments measure. The authors’ finding that happiness, measured by the PHI, and nature connectedness, measured by the CNS, did not differ significantly across levels of intensity is noteworthy precisely because these are the outcomes most often assumed to benefit from nature contact. One interpretation is that these constructs may operate as thresholds rather than gradients: any regular contact with birds and green space may be sufficient to elevate connectedness and happiness, while the dose-dependent benefits emerge only for attention-related and distress-related outcomes.

The Birdwatching Intensity Index itself represents a methodological contribution that may outlast the specific psychological findings. Measuring how intensely someone engages with a nature-based activity has long been an ad hoc exercise, with researchers choosing single indicators such as visit frequency or self-reported time outdoors. The BII instead combines five dimensions: years of practice, weekly frequency, weekly hours, the number of Brazilian species observed or photographed, and the number of species the birder can identify unaided in the field. This composite approach acknowledges that engagement in birdwatching is multidimensional, encompassing accumulated experience, current commitment, and accumulated skill. The refinement to a three-item version with a Cronbach’s alpha of 0.80 indicates that the retained items measure a coherent underlying dimension, and the unidimensional factor structure supports treating birdwatching intensity as a single continuum rather than separate facets. An alpha of 0.80 sits comfortably within the conventional range for research instruments, suggesting that the reduced version loses little reliability despite its brevity. If validated in independent samples, such an index could standardize comparisons across studies of birdwatching, citizen science participation, and nature-based recreation more broadly.

The Brazilian context of the sample merits consideration when generalizing these results. Brazil hosts one of the world’s richest avifaunas, with more than 1,900 recorded species, and the country’s birdwatching community has grown substantially since the first ornithological clubs formed in the 1970s and 1980s. The estimated 30,000 to 40,000 active birdwatchers in the country represent a small but influential constituency for conservation policy, and events such as Avistar Brasil at the Butantan Institute have consolidated a national community around the practice. Recruiting participants through social media, mailing lists, and birdwatching groups, as this study did, means the sample likely overrepresents connected, organized, and digitally literate birders, a profile that may differ from casual or solitary observers. The convenience sampling strategy also means the 444 participants cannot be assumed representative of Brazilian birdwatchers as a whole, and the restriction to adults further limits inference to younger populations. Nevertheless, the sample size is respectable for a psychometric validation study and provides adequate statistical power for the correlation and multiple regression analyses reported.

The dual significance of birdwatching for both human health and biodiversity conservation gives this line of research practical weight. Positive experiences with birds have been shown in prior work to sustain participation in citizen science programs such as bird counts and checklist platforms, and to strengthen pro-environmental attitudes and behaviors. If intensive birdwatching is associated with lower psychological distress and greater mindfulness, then promoting the practice could serve public health goals and conservation goals simultaneously, a rare alignment of interests. Urban planning that preserves forest remnants, parks, and green corridors within cities would then serve double duty, since the study’s authors note that birdwatching’s mental health effects in urban settings with limited forest cover remain understudied. Brazil’s rapidly urbanizing population makes this question particularly relevant, as most birdwatchers presumably practice near where they live rather than traveling to remote reserves.

Several limitations temper the strength of the conclusions. Beyond the cross-sectional design, the reliance on self-reported measures for both the exposure and the outcomes introduces the possibility of common-method bias, in which the same respondents’ dispositions influence all their answers in a correlated way. The psychometric scales used, while validated, capture subjective states at a single point in time, and no physiological indicators such as cortisol, heart rate variability, or electroencephalographic measures were collected. Prior work using electroencephalography has shown that exposure to natural environments produces neurophysiological patterns consistent with stress reduction and enhanced attentional engagement compared with urban settings, and future studies combining such objective measures with instruments like the BII could triangulate the mechanisms more convincingly. The large cross-national study spanning 18 countries and more than 16,000 respondents, which found that recreational visits to green and blue spaces predict more positive emotions and less distress, provides an epidemiological backdrop against which the Brazilian findings can be situated, but that study also relied on self-report.

The composition of the BII also invites reflection on what intensity means in this domain. Including species identification skill as an indicator embeds a competence dimension into the measure, which distinguishes birdwatching from activities such as walking in a park where no skill gradient exists. This choice is defensible, since identification ability reflects accumulated learning and attention to detail, but it also means the index partially measures ornithological expertise rather than pure exposure. A birder who spends many hours outdoors but rarely identifies species beyond common ones would score differently from an equally active birder with strong field skills, and the psychological consequences of these two profiles could differ. The inductive, pragmatic approach the authors took, grounded in how birdwatching is actually practiced and in indicators used in prior nature-based activity research, is reasonable given the absence of a formal theoretical framework for birdwatching intensity, but it leaves open the question of whether the construct would look the same in other cultural contexts or for other wildlife-watching activities.

Looking forward, the most valuable next steps would be longitudinal designs that track birdwatchers over time, allowing researchers to disentangle whether intensity of practice precedes improvements in mindfulness and reductions in distress or follows from them. Experimental or quasi-experimental studies, for example comparing newcomers randomly assigned to structured birdwatching programs against waitlist controls, would provide stronger causal evidence. Replication of the BII’s psychometric properties in independent and more diverse samples, including non-Brazilian populations and birders recruited outside organized communities, would establish whether the index travels beyond its original context. Finally, testing whether the mindfulness pathway mediates the relationship between birdwatching intensity and psychological distress would clarify mechanism, and if attentional engagement proves to be the active ingredient, this would connect birdwatching to a much larger literature on attention restoration and nature-based interventions, positioning a centuries-old hobby as a low-cost, scalable component of mental health promotion strategies.

Subject of Research: Psychology

Article Title: Birdwatching intensity and its impacts on mental health, happiness, mindfulness and nature connectedness among birders: a cross-sectional study in Brazil

Article References: Patricio, K. P., Castanho, V., Antonelli, V. R., Catissi, G., & Leão, E. R. (2026). Birdwatching intensity and its impacts on mental health, happiness, mindfulness and nature connectedness among birders: a cross-sectional study in Brazil. Frontiers in Bird Science, 5, Article 1879457. https://doi.org/10.3389/fbirs.2026.1879457

Image Credits: AI Generated

DOI: 10.3389/fbirs.2026.1879457

Keywords: birdwatching, mindfulness, mental health, psychological distress, nature connectedness, Brazil, well-being, intensity, impacts, mental, health, happiness