「Loss of consciousness with raised rod and tense gasping a long time with multiple emissions」as THE ULTIMATE GOAL, the TARGET, HITTING THE BULL'S EYE (中). It is certainly possible to accomplish this feat, so if you haven't yet done so, keep trying.
「Make a statement bird」or「female vocalization during copulation or masturbation and bird」is obvious by the two species names: trumpeter SWAN, whooper SWAN. As the physical center of a target, perhaps the characteristic dark black ring of color around the animal's bill, with the remainder of the bird a stark white contrast.
The SWAN, of which the whooper and trumpeter species (but not other swan species it seems) emit a type of「song」upon losing consciousness in death, resembling human female vocalization prior to becoming unconscious during a session of multiple orgasms.「One's bird with important orifice, an announcement」as the BULL'S EYE of HITTING THE TARGET PERFECTLY.「Chicks and birds with withdrawal from an orifice and female vocalization during copulation or masturbation」after HITTING THE BULL'S EYE, achieving one's GOAL. See 中 and 的 for details.
A SWAN SONG, DEATH RATTLE that perhaps was the source of the English expression, to croak (as in die), noting that the ULTIMATE ENDING GOAL, FINAL TARGET of all life is in fact death, eventually:「…[T]he whooper swan (Cygnus cygnus), a winter visitor to parts of the eastern Mediterranean, does possess a 'bugling' call, and has been noted for issuing a drawn-out series of notes as its lungs collapse upon expiry, both being a consequence of an additional tracheal loop within its sternum.」
[ https://en.wikipedia.org/wiki/Swan_song 2016-03-08 ]
Without a doubt, the Irish also have knowledge of their own to pass along in these trying times:「Masturbation will not spread coronavirus, especially if you wash your hands (and any sex toys) with soap and water for at least 20 seconds before and after.」Nonetheless and regrettably, unlike in dynastic China, it must be undertaken alone to truly be a preventative countermeasure but still achieve the desired result with some degree of safety.
[ https://www.sexualwellbeing.ie/sexual-health/sex-and-coronavirus/ 2020-03-31 ]
The Dutch, too have the same solution—it seems masturbation has become mainstream in the media the world over due to the coronavirus (it has always been 'the main stream' in reality, albeit covertly for most folks):
「'Don't have sex with your partner if they have been isolated because of (suspected) coronavirus infection,' the RVIM says. 'Sex with yourself or with others at a distance is possible (think of telling erotic stories, masturbating together).'」
[ https://www.theguardian.com/world/2020/may/15/dutch-official-advice-to-single-people-find-a-sex-buddy-for-lockdown-coronavirus 2020-05-16 ]
Needless to point out perhaps, but Chinese shamans from antiquity hit upon the same solution as a pandemic preventative countermeasure, honed for ultimate client satisfaction by utilizing naked females with no-longer-integrated feet as masturbatory sex buddies available for short-term rental with erotic visualization of live prepubescent female genitalia engaging in autoerotic stimulation herself, as a solution to the same problem facing us now, but in pre-Internet days.

External source definitions …excluding politically incorrect concepts and other meanings deemed offensive today; may include extended definitions, euphemisms, and mnemonics)
Chinese: swan; center or bull's eye of an archery target (old); goal; target
Japanese EDRDG: swan
Unihan extended: target